New turbo skyline - Boost?

[skyliner33wa]

Morning All,

I had a NA Skyline for almost two years and recently bought a turbo, i have only had it for a week and feel as though when driving it for the first time it was fast, now it just feels it is lacking power, do you guys think this has something to do with me previously driving a NA Skyline?

My new car was originally boosted at 12 with no new injectors, or ecu, etc.. it was just boosted with a bleed valve, and when taking it for a test drive at about 4000 - 5000 revs it would like jump back, i've been told that was the ecu stopping it?

anyway, the boost was turned down, but i think it was turned down too much cause the standard boost guage doesn't reach 7 when fully going at it, with adjusting boost with the bleed valve, is it easy, i have never done it before and don't want to stuff up my car. or should i get someone like cypher or xspeed to do it for me?

Cheers

Kris

[jmp]

I am fairly sure that the stock boost guage is in mmhg, not PSI so 7 is actually close to 1 bar? (Is that right?)

So just make sure you are reading the guage right before you start playing with boost as it could all end in tears.

cheers

j

[skyliner33wa]

I honestly don't want to play with boost yet hey, i don't want to touch that bleed valve, but i'm not sure what it should be at

[rob77]

Stock boost is around 6psi with a full turbo back exhaust it usually jumps to 7-9psi on its own without a bleed valve. You can safely run 12psi with the stock intercooler and stock turbo all day every day, there are a few cars on here doing it now. Work out a budget and how much HP you want and then read the forced performance thread. Or you can ask people like paul (gtst-vspec), adam 32 or myself as we have done our turbo's. obtw: with stock boost and crappy old stock boost gauge should hover around 1/2 between 0 and +7, but its so hard to read and drive at the same time.

[IMACUL8]

JMP is correct about the bleed value.

Skyliner33wa - mate you just spent all this money on new car and insurance - why the hell would you risk not getting the car checked properly.

Go see Steve at SST in Welshpool, pay for a run an the dyno and get him to adjust your bleed valve and your timing - then its FIXED and running safe and well. All for maybe another $150.....

Its a no brainer.

Daniel

[skyliner33wa]

Originally posted by IMACUL8

Skyliner33wa - mate you just spent all this money on new car and insurance - why the hell would you risk not getting the car checked properly.  

Daniel

I did get the car checked by speedworks, it passed the compression test, leak test, etc.. and checked out fine, i totally forgot to ask about boost whilst i was their cause i was too excited about getting a turbo car, yeah i will go to SST and do what you said

Kris

[ix9]

Get an aftermarket boost gauge before you start tinkering with boost, even if it's a cheap-o... that way you'll be safe if it starts to spike/jump around later on.. and you can keep an eye on it

Have fun with the new car!

[IMACUL8]

well done on getting Cashworks to check you motor - smart thinking. Get Steve to put it on the dyno, he can check your boost very accurately on the dyno - and wind it up or down however you please - and put a little advanced timing in it and you'll love it mate.....

Good luck champ.

PS - you know Steve is on the forum as SST. Send him a PM and have a chat to him.

Daniel

[ix9]

Dan,

Couldn't agree with you more about the timing stuff Steve gave me some good advice when it came to that

[skyliner33wa]

thanks guys i think i will take it to SST, once its tuned and running at what it can with what its got i will be happy

Kris