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      12-26-2008, 10:35 AM   #1
ysv
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What will happen if...

I will install the whole exhaust system (Supersprint) with two cats (instead of factory four) with stock ecu managment system? Will everything be ok (no checks, steady work)? or i will have to reflash it with some aftermarket ecu upgrade?

Secound question - same situation, but the exhaust system now without cats at all (Supersprint can provide with catless system)?

Iam sure, most of you here, installed full, headers back systems, any problems, remarks?

Example: On some subaru's(EDM) it is needed to reflash stock ecu to get rid of check engine fault sign, slightly change boost presure setings (decrease boost) for the engine to work properly, on some(JDM) it is not.

In "two words" - will i have to alter software in order it to work properly with new hardware? Or it wont be needed?
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      12-26-2008, 01:19 PM   #2
KonigsTiger
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Well, only way to find out is to do it and see. lol!
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      12-26-2008, 05:13 PM   #3
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Quote:
Originally Posted by ysv View Post
I will install the whole exhaust system (Supersprint) with two cats (instead of factory four) with stock ecu managment system? Will everything be ok (no checks, steady work)? or i will have to reflash it with some aftermarket ecu upgrade?
You'll be fine

Secound question - same situation, but the exhaust system now without cats at all (Supersprint can provide with catless system)?
you'll get a CEL...need to flash the ECU for catless or install O2simulators



Example: On some subaru's(EDM) it is needed to reflash stock ecu to get rid of check engine fault sign, slightly change boost presure setings (decrease boost) for the engine to work properly, on some(JDM) it is not.
unfortunately, Trey Cobb doesn't have an Accessport for us, so mail-in-tune or a tuner near you will need to be done for the more enterprising mods.
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