Iratic idle after fitting de-cat ?
16 August 2004, 12:00 PM
#1
Iratic idle after fitting de-cat ?
Just fitted a 3" Mongoose de-cat downpipe to my 98 STI RA, this is mated to a HKS Hiper. After fitting I noticed idle was bouncing around from 400 - 800 rpm. I re-set ECU and all was fine for around 15 mins then it starting doing it again.
Question I suppose is, downpipe causing problem ?
More likely a coincidence and MAF is on it's way out ? (disconnecting MAF and engine dies like it should though)
Lambda issue ? (though this is onlt 4 weeks old)
Any thoughts ?
Clive
Question I suppose is, downpipe causing problem ?
More likely a coincidence and MAF is on it's way out ? (disconnecting MAF and engine dies like it should though)
Lambda issue ? (though this is onlt 4 weeks old)
Any thoughts ?
Clive
16 August 2004, 08:10 PM
#2
Originally Posted by Mad Hammer
Just fitted a 3" Mongoose de-cat downpipe to my 98 STI RA, this is mated to a HKS Hiper. After fitting I noticed idle was bouncing around from 400 - 800 rpm. I re-set ECU and all was fine for around 15 mins then it starting doing it again.
Question I suppose is, downpipe causing problem ?
More likely a coincidence and MAF is on it's way out ? (disconnecting MAF and engine dies like it should though)
Lambda issue ? (though this is onlt 4 weeks old)
Any thoughts ?
Clive
Question I suppose is, downpipe causing problem ?
More likely a coincidence and MAF is on it's way out ? (disconnecting MAF and engine dies like it should though)
Lambda issue ? (though this is onlt 4 weeks old)
Any thoughts ?
Clive
Will try a new MAF
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