Turbo Issue?

[MC-WOSHY]

Ok so i don't know how to explain this properly, but I've had my car for over a year(R33 GTS-T.) Just recently i've put an aftermarket exhaust on. lately I've been noticing a problem, or i think it is anyways. when i accelerate the turbo gauge wont go any higher than the line before the +7 and it feels like something is stopping it from going further. is it because I've installed a new exhaust so i need a tune up? any help would be great! I've got a picture of the turbo gauge to make this explanation abit easier to understand haha. Thanks:)

[Anfanee]

That's waste gate pressure bro. Got a boost controller? If so its farked. Or when the exhaust was done a vacuum line for the boost controller was cut or squashed or something. Or your boost controller is turned off..... lol

Edit: waste gate pressure is how much the turbos run stock...

Edited March 5, 2013 by Anfanee

[MC-WOSHY]

That's waste gate pressure bro. Got a boost controller? If so its farked.

Edit: waste gate pressure is how much the turbos run stock...

Ok, cheers man. btw that picture isn't of my actual dash

and nah man i don't have a boost controller, the car is all stock apart from the exhaust.

Edited March 5, 2013 by MC-WOSHY

[Anfanee]

Ok, cheers man. btw that picture isn't of my actual dash

and nah man i don't have a boost controller, the car is all stock apart from the exhaust.

then its all good. Running as normal.

[MC-WOSHY]

then its all good. Running as normal.

that's good then:) cheers for the help man. just a quick question why is the +7 there if it does't reach it?

[Anfanee]

Sometimes they vary slightly. I think my GTR when i ran stock whilst running the turbos in where running just under... If you got a boost controller you can wind it up a bit more safely and get a bit more power. You might gain about 20kw but meh TBH it isn't worth the issues it can sometimes cause. Ive now got rid of the original turbos and re done the whole engine. You are probably noticing a difference from before because the turbo might be a bit more responsive so it feels like it's got more to give but really it doesn't have that much more in it.

[MC-WOSHY]

Sometimes they vary slightly. I think my GTR when i ran stock whilst running the turbos in where running just under... If you got a boost controller you can wind it up a bit more safely and get a bit more power. You might gain about 20kw but meh TBH it isn't worth the issues it can sometimes cause. Ive now got rid of the original turbos and re done the whole engine. You are probably noticing a difference from before because the turbo might be a bit more responsive so it feels like it's got more to give but really it doesn't have that much more in it.

Ahhh i see. thanks so much for your help man:) yeah this is my first car, i bought it stock so i could do it up. slowly doing bit by bit, I'll get there some day haha.

[Anfanee]

Ahhh i see. thanks so much for your help man:) yeah this is my first car, i bought it stock so i could do it up. slowly doing bit by bit, I'll get there some day haha.

Good plan. I didn't have much of a choice. Melted piston rings to pistons, Cracked the pistons and broke the valves. Had to do a complete head and bottom end rebuild. So went all out haha. Just make sure when you do start going for more power you research properly. You see so many people that bolt a bigger turbo on and blow up their engine or put a bigger turbo on and the whole car is limited by something else. For example: my car is currently at 260RWKW limited by the stock AFM. When i get around to replacing the AFM ill go up to around 330kw+ a few other little things ill see 350-360.

It's all part of the fun!

[MC-WOSHY]

Good plan. I didn't have much of a choice. Melted piston rings to pistons, Cracked the pistons and broke the valves. Had to do a complete head and bottom end rebuild. So went all out haha. Just make sure when you do start going for more power you research properly. You see so many people that bolt a bigger turbo on and blow up their engine or put a bigger turbo on and the whole car is limited by something else. For example: my car is currently at 260RWKW limited by the stock AFM. When i get around to replacing the AFM ill go up to around 330kw+ a few other little things ill see 350-360.

It's all part of the fun!

Oh that must've sucked! sounds like you did a good job tho:) yeah i will do research before hand. Not particularly keen on blowing up my car otheriwse ill be stuffed haha. im putting a fmic on next:)

[mad082]

The stock gauge doesn't read in psi, it reads in mmhg (mm of mercury i think it is). 7mmhg is about 14psi. Stock boost is 7psi, so the halfway mark is about right. Plus the fact that the stock gauge isn't that accurate.

[niZmO_Man]

You mean 700 mmHg