Not Hitting Boost Like It Should Be..

[GTSBoy]

Well, that's exactly what he's talking about. Boost controller should NEVER be hooked up the plenum.....unless they are a whizzy dizzy electro wonder box that is trying to run closed loop control....and even then I wouldn't.

And to any and all persons on here who told me that they'd never seen or heard of someone having a boost controller hooked up to the plenum....here's a perfect example ^.

[Daza33]

Interesting, when I got the car it had the stocker boost controller in it. When I swapped it out I just used the line that was going to it, and it was coming from the plenum.

I am getting the car tuned tomorrow morning with Toshi but I'll be getting it touched up on the dyno in the new year, how would you suggest I get the boost from before the plenum? Tap a thread and stick a nipple in the cooler piping?

[GTSBoy]

There is usually a boost tap on the compressor cover (on many Nissan OEM turbos). It should be connected there, or on the intercooler pipe close to the turbo.

[Daza33]

Had a look at my old turbo, there was nothing on the compressor cover. I got an ATR43G3 from Hypergear, nothing on that either.

[Got a Pulsar]

I've got an R33 S1 and a S2 turbo here, neither has a nipple on it however, the R32 turbo I just sold did.

The stock top intercooler pipe has a nipple which goes to a T piece, a hose comes off the T and goes to the wastegate actuator, another hose goes from the T to the stock boost solenoid, with another hose going from the solenoid to the Bov plumbback pipe.

Looks like cooz you don't have the stock cooler pipe with the nipple, the boost T is coming off the charcoal canister hose.

This seems kinda weird to me.

[Daza33]

My charcoal canister is mounted on my cooler outlet pipe down in the front bar, its got nothing connected to it however.

My boost line is coming from the intake manifold with a t piece and 2 lines going out from that. I figure 1 was going to the boost controller before I pulled it all apart and the other must have gone to the bov plumbback pipe. Since I'm running a metal intake I dont have that pipe anymore so I'll just plug it until I get a straight joiner and get rid of it.

[Manuel Kasko]

Daza post a pic

[MBS206]

Well, that's exactly what he's talking about. Boost controller should NEVER be hooked up the plenum.....unless they are a whizzy dizzy electro wonder box that is trying to run closed loop control....and even then I wouldn't.

And to any and all persons on here who told me that they'd never seen or heard of someone having a boost controller hooked up to the plenum....here's a perfect example ^.

There are advantages to running the boost source from the plenum, and there are also disadvantages. It is not purely "clear cut" as to who should, and who shouldn't, until you learn to look at all of the items making up the specific system.

[B-Boi34]

i went for a drive again, and you can hear the car boost but its gutless, and sounds rough the whole car vibrates more then it should almost making a WRX sound when accelerating, the idle sound is still rough thats the best description i can give right now! ill start looking around for an AFM, i really hope its only the AFM and nothing serious... thanks for your input mate

Sounds like a WRX you say?? Coilpacks is my bet. My car had the same issue between 4000 & 5000 rpm. If I held my foot flat it would sound like a WRX from 4000 to 5000 then it would be fine from 5000 to redline. It only did this under full throttle. If I held it part throttle till 5000 & then put my foot flat no issue.

Changed my coil packs & problem gone. Maybe get all your boost issues sorted first, if its still giving you issues then maybe he didnt change the coilpacks like he said.