Hey Guys

Probably a stupid question but having just 3 inch Cat back exhaust. Would boost spike be an issue or would the factory ECU be able to handle the change in exhaust flow..? Is a retune necessary..?


Cheers

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MY06 STi

You may get a small boost increase. doubtful a TBE alone will cause spikes unless its a really really cold night.

You don't have to get a retune. But it will make a world of difference to the performance of your car. And probably make for a safer tune so you don't have to worry about spikes or running lean.

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RS Liberty - Because WRX's are only good for parts...

Screw as much boost in as you can.

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[DBR]

Mister Two - Thanks for the input!

Clint - Lend me your car and I will give it a go!

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MY06 STi

Don't play with the boost. Obviously you don't know what your doing and just going to do it on the cheap.

Altho that seems to the be the Euro/Asian way. Do it the Aussie way and get somebody that know's what they are doing!

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[DBR]

Not playing with the boost, just the exhaust. It has been mentioned before abt boost spike in regards to just an exhaust change. This is why I asked the question!

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MY06 STi

I have got a full turbo back exhaust 3inch and it only mildly spikes nothing extreme but on a cold night the boost curve is really nice and just holds

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Marti


Car: C Red S13 Silvia 2.3l 400+rwhp-SOLD
Daily ae82 4age corolla (light mods)-Sold
Daily:SWB GQ Patrol
Will be a 03-04 STI next

catback will be fine without tune but if you go the tbe then its well worth tuning after to get the most bang for you mod and some piece of mind

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Funny looking German Subaru

Thanks for the input guys!

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MY06 STi