BlackCobalt707
Full Access Member
Might be intake manifold gasket, mounts won't change anything. Also look for loose charge piping or a cracked intercooler, might be easier to use a charge pipe pressure tester. If your getting a shit ton of knock stay out of boost lol
ive been stayin out. but it only happens in the higher RPM when im around 10psi
mounts can cause false knock.
---------- Post added at 09:48 PM ---------- Previous post was at 09:44 PM ----------
funny thing is we have the exact opposite issue. my car went super lean from wut it was at previously.
i had it at 11.4-11.5 at wot and it was at 11.9-12.1
being that my car isnt built i dont want it like that at all.
im takin my solid trans mounts out tomorrow to see if that will fix the issue
Check your Turbo Bolts... where your turbo bolts to the manifold. I had this problem once before... my turbo bolts were backing out. Exhaust leak somewhere.
It wouldn't be from the Intake Manifold, as someone said above. Its something Pre-MAF.
i checked those a little bit ago, some of the manifold to head nuts were loose so i got them tight and some of the turbo to manifold nuts had back off. im not sure how much it should be boosting now but i will test it tomorrow when i go to work
what do you mean by knock? timing knock retard or engine knock? 10:1 is not necessarily a bad afr but i see what you're saying. sounds like you got a leak somewhere. with these boosted cars, the maf will read differently even if its before or after the sensor. works a little like how backpressure will increase manifold pressure.
vince said my knock sensor is pickin up a ton of vibes and that is what is pulling my timing. and he said my MAF was pickin up variation in the air flow. he said i might wanna check my wastegate or BOV. i checked the wastegate again for like the 3rd time and made sure it was tight, and i triple checked my BOV as well. but the weird thing is my BOV is sucking in air at idle. i know its a knock off turbo xs type h-rfl but i asked my friend who has a authentic turbo xs type h-rfl and he said his is doin the same thing but vince and my friend from work said its not supposed to be doin that. so im going to call turbo xs tomorrow and ask them about that. where can i find a pressure tester to pressurize my charge pipes and see if i have a leak? and lately ive been gettin a CEL for my o2 sensor, it says something like heated o2 sensor bank 2 system rich. next time it comes on ill write down the code...but could that also be a cause of my problem or a faulty MAF sensor? its seen oil before but it was workin fine