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Unknown Problem - Please Help!

SAUmember888

By SAUmember888,
in Engines & Forced Induction

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SAUmember888 Explorer

SAUmember888

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Posted

Hi all,

I've just installed a boost tap for my R33 GTST and winded it up to 13 psi. Took it out for a test.

- 1st gear was extremely powerful, 2nd gear was normal (couldnt feel the pull), 3rd gear was also more powerful than before. However, intercooler pipe was loose at one of the joints and the engine stalled...(The turbo was glowing redhot when i opened the bonnet). Took it back to the garage and tighten up the pipes properly.

After 2 weeks, I started to feel a huge lag on 3rd and 4th gear, and couldnt feel any more power on the 1st nor 2nd gear even thouggh I can still feel/hear the engine and turbo work very well (Boost gauge still shows 13psi). My friend said my clutch has worn out (it doesnt go as it sounds).

I'm just wondering if anyone here has experienced the same problem before or has any idea what exactly is the problem?

Any help would be appreciated...Thanks in advance

Ken

P.S My line basically has full exhaust system, pod, and intercooler.

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QRI05E Mentor

QRI05E

Posted
Posted

Is the car blowing any smoke?? if not you might have a leak in your IC plumming again... while the car is on idle open the bonet and listen for any 'hissing'... if ur clutch is gone it will slip its nut off and smell like shit.. you will deffinatly notice it! let us know wat happens

good luck

superspit Mentor

superspit

Posted
Posted (edited)
If the clutch was slipping, you should be able to smell it.  Would be pretty noticeable.

mmmm..........not necessarily Racer...mine slips a little, enough to kill that rush when changing gears at boost!!

After checking for IC pipe leaks, as smartly suggested above, I'd re-set the ECU, give that a try......check your plug gaps (.8mm) too (?)

I know i'm going away from the clutch thing, but reduce your boost by a psi, at least!!!

13psi is bordering on a fun short time, without re-mapping!!

Edited by superspit
SAUmember888 Explorer

SAUmember888

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Posted

Hi guys,

I've gone through the checklist given by you geniuses. Below is a summary of the result

Is the car blowing any smoke? No. In fact, I cant smell anything like the clutch is burning

Leaking in the IC plumming? No "hissing" was noticed

I havent checked for plug gaps cuz I dunno how to :D

Finally, I winded the turbo back to 10psi and reset the ECU and it's running smoother with much better response (VERY HAPPY :()

Yes, I'm running a factory ECU. Is that why my car couldnt run at 13psi properly? Would remapping the ECU or changing to an aftermarket one (PowerFC) help?

Other than that, Thanks so much for your help guys! I'm pretty happy with my line now :)

superspit Mentor

superspit

Posted
Posted
Hi guys,

I've gone through the checklist given by you geniuses. Below is a summary of the result

Is the car blowing any smoke? No. In fact, I cant smell anything like the clutch is burning

Leaking in the IC plumming? No "hissing" was noticed

I havent checked for plug gaps cuz I dunno how to ;)

Finally, I winded the turbo back to 10psi and reset the ECU and it's running smoother with much better response (VERY HAPPY :))

Yes, I'm running a factory ECU. Is that why my car couldnt run at 13psi properly? Would remapping the ECU or changing to an aftermarket one (PowerFC) help?

Other than that, Thanks so much for your help guys! I'm pretty happy with my line now :)

THERE YOU GO! Factory ECU is ace, for relatively standard applications..ie, maybe 10 -11 psi. (in a nutshell!!)

Unless your car is noticeably misssing upon acceleration, then don't worry about spark plugs. (checked by removing them and measuring the 'gap'!!).

I'm being a little conservative with this, as I believe you are being!! Cool!!

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