Can a modded S5 n/a run lean?
#1
Clogged cat
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Can a modded S5 n/a run lean?
Hey, I have an 89 GXL with a Bonez race pipe, RB catback and a cone filter.
Now when I'm daily driving I can hear some little pops coming from around the exhaust manifold. It only happens when I press the throttle at more than 30%. You guys think it could be detonation?
Also, in 3rd gear, when I get to around 5k RPMs the car takes forever to go higher. Too rich?
I'm trying to save money to go on a dyno to tune my S-AFC!
Thanks!
Now when I'm daily driving I can hear some little pops coming from around the exhaust manifold. It only happens when I press the throttle at more than 30%. You guys think it could be detonation?
Also, in 3rd gear, when I get to around 5k RPMs the car takes forever to go higher. Too rich?
I'm trying to save money to go on a dyno to tune my S-AFC!
Thanks!
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I had the same problem. My car detonated like crazy after installing a cone filter and opening up the exhaust. I had to retard my timing. Check yours and see where it is. The other thing people are telling me is that I need a cold air box because now the hot engine compartment air is entering the cone filter. I can't believe this makes a big difference, but something in may car changed drastically when I did the same mods....
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Oh yea, and if it sounds like popcorn popping rapidly or something similar (crackling) it is detonation. Fix it quick or you will ruin your engine. I think I fried one of my spark plugs already, gotta pull them this weekend........
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