Huge Boost Creep... Big Turbo Lag

[joe2548]

ARE YOU SURE YOUR CLUTCH ISNT SLIPPING??

sounds like thats what it is to me, makes sense....under load boost increases rapidly and revs increase rapidly while giving you less power.

but you prob know what clutch slip is....mayb something more complex than i could understand lol.

[Kryostaisis]

nah, its not clutch slip, we had a new heavy duty button clutch installed not too long ago, it was happening a while ago

[skylinecouple]

Grab the profec manual and double check the setup.Two things previously mentioned was checking hoses and waist gate,I`d go with those first.If a work shop installed the ebc then double check for sure.After twenty five years playing with cars I Know if you look at something long enough you`ll work it out.

[Kryostaisis]

thanks for the advice guys, we will try all your suggestion and get back to you asap...

anyone thing it could be the dump pipe?, its still a stock item

[Kryostaisis]

? anyone ?

[T04GTR]

you need a biger wastgate flap. period

[Al]

you need a biger wastgate flap. period

<{POST_SNAPBACK}>

On a standard turbo? i don't think so. He has mentioned a few times that they have replaced the hi-flow with a std turbo, but fault still exists.

Having read the other posts i would;

1/ Remove the pin that attaches the actuator arm to the wastegate flap and ensure that flap moves freely.

2/ Then disconnect the exhaust from the dump pipe.

ie: remove front pipe, cat and catback system.

Have you replaced the hose to the actuator?

Have you attached the actuator hose to a differant location?

[Kryostaisis]

actuator hose has bee replaced with thicker hose and is attachted back to where it was before.

we will try to drop the exhaust and see how it goes, and the actuator arm test aswell....

if the exhaust is dropped and the problem is fixed does that mean it could actually be the stock dump pipe? because the exhaust system is fairly flowing

[Wazz]

Change your dump pipe and try it.. suprised to see a high flow put on a car before a dump pipe actualy.. ive seen it happen.. also try wire the wastegate flap open and take it for a drive.. sure it will be gutless but see wat it does

if it makes boost high up in the rev range than the wastegate hole is to small and

but if it still does the same thing with a stock turbo it would be a bit wierd for the standard dump pipe to be affecting it but it could be possible

[REdgtst]

Sounds like a problem with your boost controller or your boost controller stepper motor which is the mechanical device that will control how much pressure etc. Try buying ableed valve for 20 bucks install that and disable your boost controller. Manually control your boost and see if it still happens. -- if still happening sounds like an actuator problem! Best of luck..

ps hope it does not cost you too much money. I have a problem with boost surge at the moment which i am trying to diagnose although could be an expensive excercise? -- might just replace my turbo and boost controler as it will save wasting money on stuffing around in the long run and i believe my problem to lie with these two items. Plus new bigger turbos are fun!!!!

[Munna]

Id do what wazz said ' try wire the wastegate flap open'

See if the engine runs smooth though the whole rev range with the flap open.

good luck