Car Stuttering Before Boost?!@

[imprsv]

Hey Fellas,

Got my new engine put in this week, and after a bit of driving around etc i've noticed that sometimes when the revs are low and building up to boost

at about 2500rpm the car stutters a bit and feels like its holding back, then once it gets past there it boogies.

Now im not sure what this could be, ive narrowed it down to a few things

Vaccum Lines

Dirty AFM as the old engine blew up and oil went everywhere

Any help would be good as my mechanic has just closed down for xmas and i was hoping to get it sorted sooner rather than later.

Any help would be sweet

Also is it normal for the engine to be a bit noisy for a bit after putting it in? It had been sitting around for about 1-2 months before it was fired up and the tappets are a touch noisy, but are quieting down after a few drives.

Trent

[boliztik]

keep it in boost =)

[imprsv]

haha wish it was that easy, obviously some time u need to build it up to boost

[dmr]

get some contact cleaner and clean the afm, that would be a start. check all your hose clamps are tight.

Edited December 20, 2007 by dmr

[TailsTails]

My car's done exactly the same thing since I bought it. Bet you're running higher than stock 7psi no? Seems like on stock boost there's no problem, at 12psi there's a small cough, and 15psi a big one. Mechanic had no idea what it was.

[imprsv]

yah running 12 pounds now, havent tried to put it on stock, either way hes fixing it lol

[lighty01]

i think its your driving style mate..

[MBS206]

ECU is having a hissy fit as you're getting more air then what it should

[imprsv]

Right, So how do i fix this problem with the ECU? Reset it?

[H@ME]

i think i get this slightly too, i'm away for three weeks, when i come back i'll clean up the AFM with contact cleaner! cheers.