Max boost, Turbo screwed?

[Tsuro]

My N12 exa keeps running at 15psi and wont accelerate past 4500rpms the car will start shuddering and wont accelerate past it.

Possible suggestions are the wastegate is clogged and/or the timing is off.

Any suggestions on how to fix?

[85EXABOY]

does it do this at only 4500 on 15psi
or on 4500 no matter what?

ecu jiggles?

[Tsuro]

when i put my foot down in 1st gear my boost gauge will fly up to 15psi before i hit 4500rpms. The one in the dash just flies straight past the +5...

I'm gonna try resetting the ECU and checking the piping to the intercooler i'm told that may fix it

[Paz]

85EXABOY posted:
ecu jiggles

if all else fails, jiggle them plugs hehe lol

[Tsuro]

Fixed...
Split hose on wastegate actuator, some of my intercooling piping wasn't on properly and the ECU needed a reset.

Funny, i left the car at a mechanics for 4 days and they couldn't fix it.

[Android 360]

lol! thats why i do all my own work.

cant trust anybody else with my car,,, :chair:

[crazyexa]

hey dood

just quickly

that gauge in the dash doesnt measure psi it measures BAR

even at +5 it is only like 7 psi

Steve

[Nisman]

hat gauge in the dash doesnt measure psi it measures BAR

WRONG, it reads in mm/mg which is milimetres mercury. Which is not bar!

[crazyexa]

well that aint what the one in mine measures

[Android 360]

lol! 5 bar is LOTSa pressure!!

[85EXABOY]

heheh 5 bar is probably what drag cars use considering 1 bar is 14.7 psi

the stock boost gauge reads vacuum,, or positivie pressure in the manifold thats all.. apart from that its pretty useless..

[Paz]

does anyone actually know what +5 mm/mg is in PSI, because i cant figure it out, i have a converter which shows up this....

have a look (http://img.villagephotos.com/p/2003-3/119323/conversion.jpg)

[Paz]

just bumping this thread, can one of you guys explain the stock boost gauge on the n12, because this converter doesn't give me the correct answer......

refer to my previous post....

[boostinhard]

Hey,
the stock boost guage is in Hmmg which others have said, most aftermarket boost guages use this measurement on the vacum side of the guage but then change to psi on the positive side of it (have a look at how range changes on an aftermarket guage) The stock n12 guage keeps the Hmmg format in the positive side aswell, a bit different - but it did the job. Pretty sure the +5Hmmg is like 7.5psi....
Sam

[exatcy]

Car wont rev past 4,500rpm that happened to my exa a common problem called the crank angle sensor in the distributor, cost you a few hundred to fix but i had the exact identical problem in both my n12's