Strange Problem With R34gtt

[EJD001]

Ok.. Here is my story so far

Get the car , runs perfect except for the 4,500- 5,500 misfire under load..

I put in a new set of plugs over the weekend, champion double platuim plugs with a 1.1 gap

Also did a oil and oil filter change on the car, Genuine filter and Repsol 5W/50 full synthetic oil.

Take the car home from doing all the work , hit the freeway and the car struggles when it gets up to around 80km/h + like it feels like someone has thrown out the ancor and im pulling it along.

Just wondering if anyone else has had this problem. Car is totally stock aswell!

Cheers

Mick

[dnbutts]

ok, i have experienced the same sort of probs before.

could be a number of things, have you installed a boost controller and been playing around with it without a proper dyno tune (as what i did)

if no then could be fuel pump shat itself, AFM, injectors, turbo leak etc. best to get it up on a dyno somewhere and find out whats happening.

[EJD001]

ok, i have experienced the same sort of probs before.

could be a number of things, have you installed a boost controller and been playing around with it without a proper dyno tune (as what i did)

if no then could be fuel pump shat itself, AFM, injectors, turbo leak etc. best to get it up on a dyno somewhere and find out whats happening.

Nope no boost controller or anything

Wouldnt think that it would be a fuel pump or AFM, all we did was change the plugs and oil in it..

Dont know what oil was in there before, but it must have been done by the dealer i brought it at cause it had a ryco filter on it!

[STATUS]

gap plugs down to 0.7...

i never use champion plugs either they are shit, NGK or DENSO only.

[R33Turbo]

its gotta be the coil packs but before you consider coilpacks, try gapping down the plugs to atleast 0.8 not to waste any money and time if it ain't the coils

Edited January 22, 2008 by R33Turbo

[urtwhistle]

saying all that i had that exact problem it turned out to be a split vacume hose just b4 the boost sensor on the drivers side of the fire wall

chris