06 EVO. Backfireing and bogging down at full boost
Aug 13, 2007, 07:08 AM
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06 EVO. Backfireing and bogging down at full boost
It only does it when its hot. Once fully warmed up it does it.
Car runs and drives fine. I can boost at 10 psi all day. But once I push it to full it backfires. And not a little... ALOT.
Went for a ride with friend and he turned off boost cut and fuel cut. And it still did it.
I also took off my intake and tried a differant mass.
Checked gap on spark plugs. 2 where a little off I regapped them to .020.
Only mods are 3 in full exhaust no cat.
Stock boost
Only things I have left to try are:
Maybe change plugs.
boost solenoid
Take off exhaust and take to dealer.
Car runs and drives fine. I can boost at 10 psi all day. But once I push it to full it backfires. And not a little... ALOT.
Went for a ride with friend and he turned off boost cut and fuel cut. And it still did it.
I also took off my intake and tried a differant mass.
Checked gap on spark plugs. 2 where a little off I regapped them to .020.
Only mods are 3 in full exhaust no cat.
Stock boost
Only things I have left to try are:
Maybe change plugs.
boost solenoid
Take off exhaust and take to dealer.
Aug 13, 2007, 07:25 AM
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Check to make sure the MAF sensor is connected. Dunno if you might have removed your filter box and maybe forgot to reconnect. Did this start happening immediately after you added the exhaust?
Aug 13, 2007, 11:28 AM
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Sorry I forgot to add we did a boost leak test. We went up to 20psi and nothing.
The car sat for a week. not being use once. Then it just happend.
The car sat for a week. not being use once. Then it just happend.
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Aug 13, 2007, 11:32 AM
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Thanks for the replys guys. Keep em coming.
Anybody think changing the plugs is a good idea??
Thanks
Casey
Aug 13, 2007, 12:00 PM
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wow... thats tight. did the plugs looked fouled at all? It wouldn't hurt to swap in a set of NGK copper plugs and see what happens.
do you have any logging tools or are you getting a CEL?
do you have any logging tools or are you getting a CEL?
