{"id":14960,"date":"2026-04-16T15:42:04","date_gmt":"2026-04-16T14:42:04","guid":{"rendered":"https:\/\/www.design911.co.uk\/blog\/?p=14960"},"modified":"2026-04-16T15:46:54","modified_gmt":"2026-04-16T14:46:54","slug":"designtek-a-smarter-way-to-upgrade-performance-and-sound","status":"publish","type":"post","link":"https:\/\/www.design911.co.uk\/blog\/designtek-a-smarter-way-to-upgrade-performance-and-sound\/","title":{"rendered":"DesignTek: A Smarter Way to Upgrade Performance and Sound"},"content":{"rendered":"<p data-start=\"317\" data-end=\"535\">DesignTek\u00a0upgrades are something we\u2019ve been fitting more and more lately, and for good reason. They offer a solid balance between performance, sound, and usability, especially on classic air-cooled cars.<\/p>\n<p data-start=\"537\" data-end=\"788\">Recently, we\u2019ve been fitting a range of DesignTek exhaust components to our own 1989 Porsche 911 Speedster. It\u2019s been a gradual process rather than a single swap, allowing us to really see (and hear) how each part contributes to the overall setup.<\/p>\n<h2 data-section-id=\"18hin8r\" data-start=\"790\" data-end=\"815\">Why We Chose DesignTek<\/h2>\n<p data-start=\"817\" data-end=\"994\">The 1989 Speedster is already a special car, lightweight, raw, and very much built for driving. But like many older 911s, the original exhaust setup can feel a little restricted.<\/p>\n<p data-start=\"996\" data-end=\"1126\">That\u2019s where DesignTek comes in. The goal wasn\u2019t to completely change the car, just to bring out more of what\u2019s already there.<\/p>\n<p data-start=\"1128\" data-end=\"1246\">If you\u2019re considering something similar, you can explore the full range here:<br data-start=\"1205\" data-end=\"1208\" \/><a class=\"decorated-link\" href=\"https:\/\/www.design911.com\/b\/designtek\/?utm_source=chatgpt.com\" target=\"_new\" rel=\"noopener\" data-start=\"1208\" data-end=\"1246\">https:\/\/www.design911.com\/b\/designtek\/<\/a><\/p>\n<figure id=\"attachment_14963\" aria-describedby=\"caption-attachment-14963\" style=\"width: 800px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.design911.com\/p\/exhaust-muffler-silencer-rear-box-with-valves-sports-gt3-style-designtek-porsche-911-1975-89\/?source=doofinder\"><img fetchpriority=\"high\" decoding=\"async\" class=\"wp-image-14963 size-medium\" src=\"https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/wdew-800x453.jpg\" alt=\"EXHAUST MUFFLER \/ SILENCER REAR BOX WITH VALVES SPORTS &quot;GT3&quot; STYLE DESIGNTEK. PORSCHE 911 1975-89\" width=\"800\" height=\"453\" srcset=\"https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/wdew-800x453.jpg 800w, https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/wdew-1024x580.jpg 1024w, https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/wdew-768x435.jpg 768w, https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/wdew-1536x871.jpg 1536w, https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/wdew-2048x1161.jpg 2048w, https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/wdew-600x340.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><figcaption id=\"caption-attachment-14963\" class=\"wp-caption-text\">EXHAUST MUFFLER \/ SILENCER REAR BOX WITH VALVES SPORTS &#8220;GT3&#8221; STYLE DESIGNTEK. PORSCHE 911 1975-89<\/figcaption><\/figure>\n<h2 data-start=\"163\" data-end=\"327\"><strong>Starting at the Front<\/strong><\/h2>\n<p data-start=\"163\" data-end=\"327\">We began by fitting upgraded heat exchangers as part of the process:<br data-start=\"231\" data-end=\"234\" \/><a class=\"decorated-link\" href=\"https:\/\/www.design911.com\/porsche\/911-1987-89\/porsche-exhaust-heat-exchangers\/?brands=94246\" target=\"_new\" rel=\"noopener\" data-start=\"234\" data-end=\"325\">https:\/\/www.design911.com\/porsche\/911-1987-89\/porsche-exhaust-heat-exchangers\/?brands=94246<\/a><\/p>\n<p data-start=\"329\" data-end=\"562\">Alongside this, we also introduced a DesignTek GT3-style rear silencer into the setup:<br data-start=\"419\" data-end=\"422\" \/><a class=\"decorated-link\" href=\"https:\/\/www.design911.com\/p\/exhaust-muffler-silencer-rear-box-with-valves-sports-gt3-style-designtek-porsche-911-1975-89\/?source=doofinder\" target=\"_new\" rel=\"noopener\" data-start=\"422\" data-end=\"560\">https:\/\/www.design911.com\/p\/exhaust-muffler-silencer-rear-box-with-valves-sports-gt3-style-designtek-porsche-911-1975-89\/?source=doofinder<\/a><\/p>\n<p data-start=\"564\" data-end=\"809\">On our 1989 Porsche 911 Speedster, combining these components made a noticeable difference straight away. While the heat exchangers lay the groundwork, the DesignTek GT3-style rear box is what really starts to shape the character of the car.<\/p>\n<figure id=\"attachment_14968\" aria-describedby=\"caption-attachment-14968\" style=\"width: 800px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.design911.com\/p\/exhaust-cross-over-pipe-designtek-porsche-911-1974-89\/\"><img decoding=\"async\" class=\"wp-image-14968 size-medium\" src=\"https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/0986t6-800x453.jpg\" alt=\"EXHAUST CROSS OVER PIPE DESIGNTEK. PORSCHE 911 1974-89\" width=\"800\" height=\"453\" srcset=\"https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/0986t6-800x453.jpg 800w, https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/0986t6-1024x580.jpg 1024w, https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/0986t6-768x435.jpg 768w, https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/0986t6-1536x871.jpg 1536w, https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/0986t6-2048x1161.jpg 2048w, https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/0986t6-600x340.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><figcaption id=\"caption-attachment-14968\" class=\"wp-caption-text\">EXHAUST CROSS OVER PIPE DESIGNTEK. PORSCHE 911 1974-89<\/figcaption><\/figure>\n<h2 data-section-id=\"wrgjlk\" data-start=\"1648\" data-end=\"1668\">Refining the Flow<\/h2>\n<p data-start=\"1670\" data-end=\"1807\">Next, we moved onto the cross-over pipe:<br data-start=\"1710\" data-end=\"1713\" \/><a class=\"decorated-link\" href=\"https:\/\/www.design911.com\/porsche\/911-1987-89\/porsche-exhaust-cross-over-pipes\/?brands=94246\" target=\"_new\" rel=\"noopener\" data-start=\"1713\" data-end=\"1805\">https:\/\/www.design911.com\/porsche\/911-1987-89\/porsche-exhaust-cross-over-pipes\/?brands=94246<\/a><\/p>\n<p data-start=\"1809\" data-end=\"2003\">This is one of those parts that quietly makes a difference. By fitting a DesignTek cross-over pipe, the system feels more balanced, and the exhaust note becomes smoother and more consistent.<\/p>\n<figure id=\"attachment_14964\" aria-describedby=\"caption-attachment-14964\" style=\"width: 800px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.design911.com\/p\/exhaust-muffler-silencer-rear-box-with-valves-sports-1-in-2-out-designtek-porsche-911-1975-89\/?source=doofinder\"><img decoding=\"async\" class=\"wp-image-14964 size-medium\" src=\"https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/frevq3-800x453.jpg\" alt=\"EXHAUST MUFFLER \/ SILENCER REAR BOX WITH VALVES SPORTS 1 IN 2 OUT DESIGNTEK. PORSCHE 911 1975-89\" width=\"800\" height=\"453\" srcset=\"https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/frevq3-800x453.jpg 800w, https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/frevq3-1024x580.jpg 1024w, https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/frevq3-768x435.jpg 768w, https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/frevq3-1536x871.jpg 1536w, https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/frevq3-2048x1161.jpg 2048w, https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/frevq3-600x340.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><figcaption id=\"caption-attachment-14964\" class=\"wp-caption-text\">EXHAUST MUFFLER \/ SILENCER REAR BOX WITH VALVES SPORTS 1 IN 2 OUT DESIGNTEK. PORSCHE 911 1975-89<\/figcaption><\/figure>\n<h2 data-section-id=\"1n96q37\" data-start=\"2005\" data-end=\"2026\">The Biggest Change<\/h2>\n<p data-start=\"2028\" data-end=\"2228\">The most noticeable upgrade came from the rear silencer:<br data-start=\"2084\" data-end=\"2087\" \/><a class=\"decorated-link\" href=\"https:\/\/www.design911.com\/p\/exhaust-muffler-silencer-rear-box-with-valves-sports-1-in-2-out-designtek-porsche-911-1975-89\/?source=doofinder\" target=\"_new\" rel=\"noopener\" data-start=\"2087\" data-end=\"2226\">https:\/\/www.design911.com\/p\/exhaust-muffler-silencer-rear-box-with-valves-sports-1-in-2-out-designtek-porsche-911-1975-89\/?source=doofinder<\/a><\/p>\n<p data-start=\"2230\" data-end=\"2510\">We fitted a valved DesignTek sports exhaust, which completely changes the character of the car. With the valves closed, it\u2019s still perfectly usable on the road. Open them up, and it sounds exactly how you\u2019d want a 911 Speedster to sound: deeper, sharper, and far more engaging.<\/p>\n<p data-start=\"2230\" data-end=\"2510\">Watch video <a href=\"https:\/\/www.instagram.com\/p\/DXJpjsgCPou\/?img_index=4\">here<\/a><\/p>\n<figure id=\"attachment_14965\" aria-describedby=\"caption-attachment-14965\" style=\"width: 800px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.design911.com\/b\/designtek\/\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-14965 size-medium\" src=\"https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/DSC03722-800x453.jpg\" alt=\"Porsche 911 Speedster 1989\" width=\"800\" height=\"453\" srcset=\"https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/DSC03722-800x453.jpg 800w, https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/DSC03722-1024x580.jpg 1024w, https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/DSC03722-768x435.jpg 768w, https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/DSC03722-1536x871.jpg 1536w, https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/DSC03722-2048x1161.jpg 2048w, https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/DSC03722-600x340.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><figcaption id=\"caption-attachment-14965\" class=\"wp-caption-text\">Porsche 911 Speedster 1989<\/figcaption><\/figure>\n<h2 data-section-id=\"1ejjdyf\" data-start=\"2512\" data-end=\"2531\">How It Feels Now<\/h2>\n<p data-start=\"2533\" data-end=\"2740\">After fitting these DesignTek components to our 1989 Porsche 911 Speedster, the difference is clear. The engine feels a little freer, but more importantly, the whole driving experience is more involving.<\/p>\n<p data-start=\"2742\" data-end=\"2819\">It\u2019s not about chasing huge power gains; it\u2019s about making the car feel right.<\/p>\n<figure id=\"attachment_14966\" aria-describedby=\"caption-attachment-14966\" style=\"width: 800px\" class=\"wp-caption alignnone\"><a href=\"https:\/\/www.design911.com\/b\/designtek\/\"><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-14966 size-medium\" src=\"https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/DSC037wd22-800x453.jpg\" alt=\"Porsche 911 Speedster 1989\" width=\"800\" height=\"453\" srcset=\"https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/DSC037wd22-800x453.jpg 800w, https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/DSC037wd22-1024x580.jpg 1024w, https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/DSC037wd22-768x435.jpg 768w, https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/DSC037wd22-1536x871.jpg 1536w, https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/DSC037wd22-2048x1161.jpg 2048w, https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/DSC037wd22-600x340.jpg 600w\" sizes=\"(max-width: 800px) 100vw, 800px\" \/><\/a><figcaption id=\"caption-attachment-14966\" class=\"wp-caption-text\">Porsche 911 Speedster 1989<\/figcaption><\/figure>\n<h2 data-section-id=\"114wazr\" data-start=\"2821\" data-end=\"2838\">Final Thoughts<\/h2>\n<p data-start=\"2840\" data-end=\"3077\">Working through this setup on our own car has shown just how well DesignTek parts work together. Each component adds something, and when combined, they create a noticeable improvement without losing the character of the original car.<\/p>\n<p data-start=\"3079\" data-end=\"3181\">If you\u2019re looking to upgrade your own 911, it\u2019s worth taking a look here:<br data-start=\"3152\" data-end=\"3155\" \/><a href=\"https:\/\/www.design911.co.uk\">Design911.co.uk<\/a><\/p>\n<p data-start=\"3183\" data-end=\"3366\">For us, continuing to fit DesignTek parts to our 1989 Porsche 911 Speedster has been a straightforward way to get more out of an already brilliant car, without overcomplicating it.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>DesignTek\u00a0upgrades are something we\u2019ve been fitting more and more lately, and for good reason. They offer a solid balance between performance, sound, and usability, especially on classic air-cooled cars. Recently, [&hellip;]<\/p>\n","protected":false},"author":10,"featured_media":14962,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"_price":"","_stock":"","_tribe_ticket_header":"","_tribe_default_ticket_provider":"","_ticket_start_date":"","_ticket_end_date":"","_tribe_ticket_show_description":"","_tribe_ticket_show_not_going":false,"_tribe_ticket_use_global_stock":"","_tribe_ticket_global_stock_level":"","_global_stock_mode":"","_global_stock_cap":"","_tribe_rsvp_for_event":"","_tribe_ticket_going_count":"","_tribe_ticket_not_going_count":"","_tribe_tickets_list":"[]","_tribe_ticket_has_attendee_info_fields":false,"footnotes":""},"categories":[40],"tags":[],"class_list":["post-14960","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-news"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.2 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\r\n<title>DesignTek: A Smarter Way to Upgrade Performance and Sound | Design911 Members Club<\/title>\r\n<meta name=\"description\" content=\"DesignTek exhausts and performance parts available at Design911. 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Improve sound, performance, and reliability with high-quality.\" \/>\r\n<meta property=\"og:url\" content=\"https:\/\/www.design911.co.uk\/blog\/designtek-a-smarter-way-to-upgrade-performance-and-sound\/\" \/>\r\n<meta property=\"og:site_name\" content=\"Design911 Members Club\" \/>\r\n<meta property=\"article:published_time\" content=\"2026-04-16T14:42:04+00:00\" \/>\r\n<meta property=\"article:modified_time\" content=\"2026-04-16T14:46:54+00:00\" \/>\r\n<meta property=\"og:image\" content=\"https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/3e3-scaled.jpg\" \/>\r\n\t<meta property=\"og:image:width\" content=\"2560\" \/>\r\n\t<meta property=\"og:image:height\" content=\"1451\" \/>\r\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\r\n<meta name=\"author\" content=\"Anthony Malone\" \/>\r\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\r\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"Anthony Malone\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"4 minutes\" \/>\r\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/www.design911.co.uk\/blog\/designtek-a-smarter-way-to-upgrade-performance-and-sound\/#article\",\"isPartOf\":{\"@id\":\"https:\/\/www.design911.co.uk\/blog\/designtek-a-smarter-way-to-upgrade-performance-and-sound\/\"},\"author\":{\"name\":\"Anthony Malone\",\"@id\":\"https:\/\/www.design911.co.uk\/blog\/#\/schema\/person\/464889f076f76d4eb246f790f61d2ede\"},\"headline\":\"DesignTek: A Smarter Way to Upgrade Performance and Sound\",\"datePublished\":\"2026-04-16T14:42:04+00:00\",\"dateModified\":\"2026-04-16T14:46:54+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/www.design911.co.uk\/blog\/designtek-a-smarter-way-to-upgrade-performance-and-sound\/\"},\"wordCount\":577,\"image\":{\"@id\":\"https:\/\/www.design911.co.uk\/blog\/designtek-a-smarter-way-to-upgrade-performance-and-sound\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/3e3-scaled.jpg\",\"articleSection\":[\"News\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.design911.co.uk\/blog\/designtek-a-smarter-way-to-upgrade-performance-and-sound\/\",\"url\":\"https:\/\/www.design911.co.uk\/blog\/designtek-a-smarter-way-to-upgrade-performance-and-sound\/\",\"name\":\"DesignTek: A Smarter Way to Upgrade Performance and Sound | Design911 Members Club\",\"isPartOf\":{\"@id\":\"https:\/\/www.design911.co.uk\/blog\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/www.design911.co.uk\/blog\/designtek-a-smarter-way-to-upgrade-performance-and-sound\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/www.design911.co.uk\/blog\/designtek-a-smarter-way-to-upgrade-performance-and-sound\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/www.design911.co.uk\/blog\/wp-content\/uploads\/2026\/04\/3e3-scaled.jpg\",\"datePublished\":\"2026-04-16T14:42:04+00:00\",\"dateModified\":\"2026-04-16T14:46:54+00:00\",\"author\":{\"@id\":\"https:\/\/www.design911.co.uk\/blog\/#\/schema\/person\/464889f076f76d4eb246f790f61d2ede\"},\"description\":\"DesignTek exhausts and performance parts available at Design911. 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