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Steve |
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914 Guru ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 5,614 Joined: 14-June 03 From: Orange County, CA Member No.: 822 Region Association: Southern California ![]() ![]() |
It seems like ITB's are all the rage with our air cooled sixes.
The throttle bodies are either PMO or direct to head either with butterflies or AT-Power with no butterflies. Mark dug up some of the pricing!! Thanks Mark!! X-Faktory uses Megasquirt, Link or Motec M84 https://www.x-faktory.com/uploads/6/3/9/3/6...efi_systems.pdf Starting at $4754 Clewett uses TEC https://www.clewett.com/index.php?main_page...dex&cPath=2 Starting at $8400 Rasant uses exclusively Motec, which is the most expensive https://rasantproducts.com/collections/mote...84-ecu-packages Starting at $5700 for the ITB's and $6200 for the EFI AT-Power offers throttle bodies without butterflies, but use special cams to optimize https://www.atpower.com/ Starting at $13K Lots of options which can raise or lower the price. I have a stock Euro 3.2 with DME that does run fine, but I miss the sound of the webers, but I don't miss the hassle of webers, cold start, poor gas mileage, etc. I know ITB's are expensive, but option 2 at X-Faktory is not that bad and pretty popular over on the Pelican 911 technical forum. Anybody on this forum have any experience with any of these toys? |
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Mark Henry |
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that's what I do! ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() Group: Members Posts: 20,065 Joined: 27-December 02 From: Port Hope, Ontario Member No.: 26 Region Association: Canada ![]() |
One thing about all these ITB systems is if your engine itself isn't up to snuff then it just expensive lipstick on a pig.
EFI itself doesn't add HP, the ITB open things up, but an engine is the sum of all its parts not just the bolt ons. We'll see if there's much HP loss going from my 40mm webers with a Patrick twin plug dizzy to a single honda TB modified 964 intake with SDS EFI with crankfire. My engine is still fresh perfomance twin plug with healthy WEB 120/104 cams. My bet is there won't be a huge difference, especially for a street car. My prime objectives is a bit better gas milage,a bit less intake noise and less matanance than the carbs. Also I have another 914 project that will need the carbs and dizzy for. If there's a big downgrade in HP I can always add ITB's, but I'd do another motorcycle TB mod like I did on my 2.6 nickies T4. |
horizontally-opposed |
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Advanced Member ![]() ![]() ![]() ![]() Group: Members Posts: 3,432 Joined: 12-May 04 From: San Francisco Member No.: 2,058 Region Association: None ![]() ![]() |
One thing about all these ITB systems is if your engine itself isn't up to snuff then it just expensive lipstick on a pig. EFI itself doesn't add HP, the ITB open things up, but an engine is the sum of all its parts not just the bolt ons. We'll see if there's much HP loss going from my 40mm webers with a Patrick twin plug dizzy to a single honda TB modified 964 intake with SDS EFI with crankfire. My engine is still fresh perfomance twin plug with healthy WEB 120/104 cams. My bet is there won't be a huge difference, especially for a street car. My prime objectives is a bit better gas milage,a bit less intake noise and less matanance than the carbs. Also I have another 914 project that will need the carbs and dizzy for. If there's a big downgrade in HP I can always add ITB's, but I'd do another motorcycle TB mod like I did on my 2.6 nickies T4. Sounds like you're on the right track with reasonable goals. Jerry Woods used to say that you don't gain much peak hp with EFI vs carbs, but you gain a lot of performance. More torque, more of the time. More drivability. More consistent throttle response, which leads to more confidence, which leads to more speed. Marty, that Borla setup looks delish. Didn't know they were in the ITB game, and have had Borla products in the past…and they were superb. Also like that it's a name that's been around a long time. (IMG:style_emoticons/default/idea.gif) |
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