bik
02-27-2011, 01:03 PM
Hi i try to search for this problem found nothing like it O_o
I just got a JWT S4 cams on my pretty stock (just intercooler and all exhaust pipeing 3inch) sr20det black top
the car feels great on stock PSI but for some reason the engine start knocking when i do a run at 14 psi, a friend of mine say it knock because is to much back pressure and the turbo (still the t25) is too small for the flow of a S4 cams
is that true?
anyone have or had a similar problem?
any easy way to fix it?
any help will be apreciated
P.S: my english sucks =/
oh forgot to say the ignition timing is at 15 degrees
by knockin i think i got it wrong... i mean started to detonate around 4k rpms O_o
I just got a JWT S4 cams on my pretty stock (just intercooler and all exhaust pipeing 3inch) sr20det black top
the car feels great on stock PSI but for some reason the engine start knocking when i do a run at 14 psi, a friend of mine say it knock because is to much back pressure and the turbo (still the t25) is too small for the flow of a S4 cams
is that true?
anyone have or had a similar problem?
any easy way to fix it?
any help will be apreciated
P.S: my english sucks =/
oh forgot to say the ignition timing is at 15 degrees
by knockin i think i got it wrong... i mean started to detonate around 4k rpms O_o