Thread For My Car Problems.

[lilcrash]

Ok here is the problems, turbo is a hypergear atr43 ss-1

Boost spike to 22psi then falls straight off to 14psi

80% of the time it only gets to 16/17psi

Has 500rpm lag over most other identical turbos

Only made 306hp.

Attempted fixes.

Removed air box

Tried pod filter

Tried different intercooler

Removed exhaust

Tried different exhaust

Pressure tested the whole system

Removed boost control

[levinboy]

have you checked actuator movement ie base setting

[DVS JEZ]

1st ive heard of it

[pipster11]

pump 10-20psi into the wastegate and see what happens?

what dump pipe?

[Hanaldo]

1st ive heard of it

lilcrash, as others have said, check the actuator.

[chocco]

Each day was a different symptom for a while there...

[lilcrash]

To add insult to injury. I got out accelerated by an xr6 :'(

My setup is as follows. K&N panel filter-z32-3"metal intake-turbo-jjr bellouth dump-gutted cat-hks hi power cat back-jjr return flow intercooler-turbosmart type 3 plum back-Nissan 350z 450cc injectors-walbro gss341-nistune

[Bsa]

Haha that sucks prob went and told his mates he beat a skyline dick

[Dale FZ1]

Notes on setup are a little disjointed.

Gearbox - auto or manual?

Boost control - straight feed to actuator now? Previously? And what difference observed?

Actuator - what pressure is it rated at? Is it set up ok? What pressure does the valve crack off its seat?

Boost delivery - do you have a dyno sheet with boost overlay? Saying it's 500rpm more laggy than other similar setups doesn't give a great insight into things, graph tells a whole lot more.

Dyno sheet - please upload one

[lilcrash]

It had a turbosmart boost t, now has nothing, still does exactly the same thing. It's a manual, it's a hypergear high pressure actuator 18psi??

[DVS JEZ]

What AFR did he tune it at bud?

Did he mention if he had issue's while tuning?

Did u get a sheet with a torque graph

[Hanaldo]

Haha that sucks prob went and told his mates he beat a skyline dick

Well that would've been awkward, considering the car in question is a Stag...

[SiR_RB]

looks like a very weak actuator, you say its rated at 18psi yet your boost is dropping off to 14psi? didnt think you can run lower boost than your actuator is rated at..

[Hanaldo]

looks like a very weak actuator, you say its rated at 18psi yet your boost is dropping off to 14psi? didnt think you can run lower boost than your actuator is rated at..

The actuator should be plumbed in off the turbo outlet, so it will hold x amount of psi at the turbo outlet. Theoretically that number should be the same as the pressure in your manifold, but only if everything else is working properly; boost leaks, pressure drop, restrictions, etc. will affect it.

[lilcrash]

He didn't tell me what afr he tuned to (annoyed me when I was driving home and realized) and I do have a torque graph, il put it up in a minute. He said he couldn't get it to hold full boost, he tightened the actuator adjustment and turned the boost control up. The actuator is plumbed into the fitting that used to go to the air con compressor solenoid?switch?

Only boost leak is through my open air tappet cover breather, holds 30psi if I put my finger in it.

i should also point out, my car makes 22 psi but doesnt feel like it makes power until it drops below 18/19, like kind of has that vvti+l feel after that.

Edited October 27, 2011 by lilcrash

[lilcrash]

[lilcrash]

dvs jez, how far down the coast are you? how much do you charge per hour for dyno tuning?

[75coupe]

if you put your finger in the cam cover breather it boosts to 30psi????

sounds like you have a strange boost leak...

maybe you should have the breathers plumbed up right and find your boost leak...? just a thought.

[Crans]

breathers shouldnt leak air on boost only on vacume if you pcv is connected to the plenum still and breathers aren;t connected to intake

[DVS JEZ]

dvs jez, how far down the coast are you? how much do you charge per hour for dyno tuning?

Pm sent