sean83

iTrader: (-1)

orite guys out in the p1 the day went to over take a car accelerated to 65mph then feathered the throttle to back to 60 and it chugged a we bit knocklink sensor lit up max then cut the boost, about 2 months ago it pulled the timing back 2 degrees cause it pickt up a knock and the frequency was down at 8 the knock count was 40 i think but after my mate had the laptop on it it was perfect no knock engine running perfect but now its done it again, just after a bit of advice guys what could be causing this its not like a miss its more a we backfire then the knocklink sensor lights up red but it only happens when your like feathering the throttle?

prodriverules

iTrader: (52)

Could be running rich on over run?

sean83

iTrader: (-1)

andy forest mapped it to run 405bhp ive got a air fuel gauge and its usually running in the rich buts its we bit under the rich now

prodriverules

iTrader: (52)

Could be your lamba sensor then,have you got maf or not mate

sean83

iTrader: (-1)

ye got a maf but when my mate had it on the laptop he said the mafs perfect everything was fine but the temp sensor was flickering a we bit

prodriverules

iTrader: (52)

The temp sender could defo cause fueling problems mate,are you running an apexi by any chance?if so they are very sensitive to the reading from sensors to run right.

sean83

iTrader: (-1)

just running off the standard ecu bud i just tryd reseting ecu no difference and theres no fault codes either

prodriverules

iTrader: (52)

sounds like it could be the temp sender then if thats all that was giving slightly iratic readings mate

sean83

iTrader: (-1)

ye i think ill order one its just weird cause it was running perfect it still is just not boosting over .6 and its hard to say what it sounded like a mix of a miss and a we explosion or summit hard to explain

prodriverules

iTrader: (52)

without hearing i can't be sure but it does sound like fueling issues mate,have you checked all the pipe work for splits and leaks on the intercooler and the like?

sean83

iTrader: (-1)

just goin to have a quick check mate

prodriverules

iTrader: (52)

no worries,post once checked fella

sean83

iTrader: (-1)

rite ive just checked for air leaks and everything looks fine so on the off chance i just disconnected the battery and quick run up the road and must have cleared the ecu hitting 1.5 bar no bother running sweet as a nut hows that

prodriverules

iTrader: (52)

Sounds like when you tryed the ecu reset it didnt work then mate,glad its sorted

sean83

iTrader: (-1)

ye me an all gona order that sensor the nite be on the safe side just keep a close eye on it thanks for the help mate much appreciatted

prodriverules

iTrader: (52)

Wouldnt be a bad idea given the reading werent quite right,and no worries fella

sean83

iTrader: (-1)

no bother thanks again mate