horrible performance

[netrati]

Hey I got a few questions for you guys. I just bought a 1989 GTS-t. It has aftermarket exhaust, intercooler, intake, bov, and tuned computer. The deal is it idles kinda rough and when you let off the gas after revving it up the RPMs drop way low like 450 or so, it almost stalls. Another thing is horrible, I mean awful performance. I tested it from 0-100km/h and it took 8.869secs!!! Not anywhere close to stock! I'm hoping that it needs a tune-up really bad. Maybe a fried spark plug or a bad ignition coil. Could one of these things cause the performance to be that bad?

[SLY33]

your nearly stalling problem after revving it up is due to the BOV. the spring tension needs to be increased a bit, simple fix if your bov is adjustable. Sounds like you need to get a good tune

- theres no way you can be in japan?! why on earth would you need advice from australia?

And you no write broken englis.

[netrati]

HAHA very funny. I'm not for sure if the BOV is adjustable, it's an HKS one. I'm an american that's why my english isn't broken and I can't exactly get help here in Japan b/c I don't speak Japanese. I hope a tune-up does the trick.

[netrati]

Can someone explain to me why exactly not enough spring tension in the BOV causes the car the stall after high revs?

[BigDatto]

check this thread:

http://www.skylinesaustralia.com/forums/sh...s=&threadid=408

curiously, changing to copper plugs gapped @8mm fixed my stalling problem - so it seems it could be any one of three issues

BOV, fuel pressure or in my experience, plugs !

must be difficult for you not speaking Nihongo...

Good Luck with it.

[Ronin 09]

hmmm, 8mm gap eh? i assume you mean 0.8mm sorry couldn't resist, no offense intended

[BigDatto]

10-4

Copy That !!

[Cool Hand Luke]

When your car idles, do your revs fluctuate? By that i mean for 15secs its at 800rpm, next 15 secs its at 1200?

[netrati]

No the revs don't fluctuate that much. When I first turn in on they are usally high, somewhere around 1200RPM. After a few mins when the car warms up they drop down to 800RPM.

[Steve]

netrati,

have a look at this thread: http://www.skylinesaustralia.com/forums/sh...s=&threadid=408 could also be the problem at low revs.

Plugs never hurt, esp as NGK coppers are about AUD$20 a set, clean your afm, change the fuel filter and reset the ecu - different car (hopefully)

[netrati]

Got the car back from the shop today. It seems as though my mine's tuned computer bit the dust and it was only firing 5 cyl.

[Nick]

I had dramas with the previous owner's adjustment on my Blitz BOV, a simple tweak and she was running sweet. But now that I've just plugged in the Power FC (yet to be tuned), yeah I get higher revs when first turning the car on (like 1400rpm), but it rarely comes back down to where it would ordinarily idle wehn warm on the stock computer (700rpm). And when decelerating coming up to a roundabout for example at 30km'h in 2nd, as I exit the roundabout my revs will rise and I can actually increase my speed without touching the accelerator. I know the base program is not so great - typically running rather rich - but is the car feeding more fuel to the engine and at the same time being misread as throttle when the clutch is out and my foot's off the accelerator? WTF?

The mind boggles. There I go, having a spit when all it probably needs is a tune...

Anyone ever experienced anything similar though?

Cheers!

[bryanlee38]

OMG. u're in japan! Can u get me some parts? - I hear 18" rims r only $400/$500 there 2nd hand. I want some! lol.

Back to ur question. my bov did the samething. after like 2 weeks, i reset the ecu once too, everything was fine. Guess i was just lucky. anywayz how about those rims I'm pretty sure there will be a few guys in Japan who can help u out - $ is an universal language of requiring their services.

[netrati]

HAHA probably not even $400. Cars are super cheap here. There was a 1991 Skyline GTS-t with an aftermarket turbo, exhaust, clutch, injectors, pump, and all other kinds of stuff for $4800.

[Ronin 09]

i think i offer a collective "we hate you" from everyone here in Aus who can't get a modded GTSt for 4800.

Good luck with getting your car running properly!

[bryanlee38]

so how about it bro. I'll deposot Aus$400 in ur bank a/c. ship me a set of 18's (white ones) and u can keep the change kekekeke. I know its off the topic ... but I NEED RIMS. I HATE MY STOCK ONES!

[Guest RedLineGTR]

dam i'm going to japan...lolz

[netrati]

I'll check the prices of 18" rims

[Cool Hand Luke]

Can you get me a turbo? HKS2530 to be specific

[red17]

Hey netrati,

Are you part of the american military over in japan? I hear theres a bunch of Marines on bases over there who are right into drifting etc.

Red17