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SVTPerformance's Chain of Restaurants
Tuning À la carte
STAND ALONE ECU W/ FACTORY ECM?
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<blockquote data-quote="BigPoppa" data-source="post: 15971033" data-attributes="member: 177587"><p>Guys have been piggybacking ECUs since the MegaSquirt, Haltech, AEM, etc. first came out.</p><p></p><p>Many times, you can use one to drive larger injectors that the stock computer doesn't support when using it in a piggyback. That and engine swaps in cars with CAN bus.</p><p></p><p>While it is very possible to piggyback a stock ECU to get a car to meet OBD2, it isn't as easy as it sounds. Heck, it's hard enough to get Tricore and Copperhead cars to pass emissions with just long tube headers or no cats with the new rules many states have in place only allowing one "not ready" test, let alone making sure both computers play well with each other.</p><p></p><p>But, it IS possible.....</p></blockquote><p></p>
[QUOTE="BigPoppa, post: 15971033, member: 177587"] Guys have been piggybacking ECUs since the MegaSquirt, Haltech, AEM, etc. first came out. Many times, you can use one to drive larger injectors that the stock computer doesn't support when using it in a piggyback. That and engine swaps in cars with CAN bus. While it is very possible to piggyback a stock ECU to get a car to meet OBD2, it isn't as easy as it sounds. Heck, it's hard enough to get Tricore and Copperhead cars to pass emissions with just long tube headers or no cats with the new rules many states have in place only allowing one "not ready" test, let alone making sure both computers play well with each other. But, it IS possible..... [/QUOTE]
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SVTPerformance's Chain of Restaurants
Tuning À la carte
STAND ALONE ECU W/ FACTORY ECM?
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