Here are the engine upgrades:

t28 turbo
hks acuator
ss turbo lines
550 injectors
Sard fuel pressure reg with gauge
fmic
koyo rad
greedy bov
honed intake
hks air filter
aem tru boost gauge

It ran just fine on the way home, it would boost just fine and everything. Im thinking that an injector is stuck open or has something to do with the maf or fpr. I really need to get a safc to tune the fuel. Im not sure that has something to do with it also, but it ran fine when we got it.

If anyone has any input I would greatly appreciate it.

UPDATE:

I found a intercooler boot that was off and hooked it back up. It idles now and revs when in neutral but when in gear it stutters and what now. Should I be making boost when in neutral and reving it?


Modified by wynnEZ at 3:42 PM 6/15/2008

What is you vacuum at idle when fully warmed up? If it is less then 20 start hunting for vacuum leaks.

Clean your AFM. Check your timing. What is your fuel pressure at when you follow the FPR instructions in the Stickies?

You have to start eliminating possibilities and then i can help more.

Thanks

16 is for sure low vacuum, keep hunting that boost leak. Yes a boost leak will cause rich conditions and less power. Do a compression test/leak down test. If you are un sure how to do them just ask i can tell you. Do this 1st it can tell us alot. What is your fuel pressure as per the stickies?

To be clear did you do the boost leak test with the throttle open? It made a huge deal on my motor having the throttle wedged open rather then closed. Try spraying certain problem areas with soapy water then pressurizing the system.

The wastegate can be an option for you to be losing boost, try and find another off a T25 or T25g turbo and swap it on. It takes 5 mins to change out the actuator. EDIT: Saw you had a HKS Adjustable, i highly doubt it is the wastegate now.

To check your base timing just use a timing light, clamped off the loop thing on the coil pack harness, DO NOT touch the CAS right now.

And you having no TPS is just ****ed up in so many ways i can't understand. Pics please

could also have a valve stuck open in the butterfly system..... IIRC that is the issue tim was having.(one of them anyway)

@ 16 what happens when you step on the throttle? it shouldnt be a cold start condition as it is summer right?

what are you doing to rectify the HUGE(over stock) injectors? that will bog you down and make you run rich as all hell

Quote, originally posted by r34 gtr »

Who gets rid of their CA's? People who suck, thats who.

Is this a stock MAF?

What do these go to?

And these?

Heres the timing...

And a picture of the car...

As of now there nothing to help tune the 550's. I really have no clue how he had it running so well without them. I plan of getting a wide-band and safc to tune with as of now, ordering tonight. I will still hunt for a vacuum leak.

Thanks guys

click banner below for Rico's homepage:

Quote, originally posted by dickie »

some hard gayness in this thread.

However, you are missing a TPS (not good)

You may have untuned 550 injector (definatly contributing to being rich)

39psi fuel pressure is to much. Needs to be 36 as per the stickies.

Because you dont really know where you stand in terms of management. I reccomend you get a stock ECU, install a TPS, install stock 370s, lower you fuel pressure and then see where you stand. Otherwise it will be impossible to diagnose whats going on.

ECU:

Vent Hoses this also doesn't seem right :

And it looks like something should go there.

I will try to get a TPS and some 370's, hope the pictures help.

1 You "chip" is underneath that small board, you should see the screws to lift the board. Just take them out and take a pic of the "chip"

2 First hose goes to the turbo inlet pipe or a catch can

3 2nd hose goes from your PCV which should be on the back on the intake manifold plate (top right, cant miss it) to your intake valve cover.

4 in the last pic you are completly missing all your butterfly soleniods. To replace them can be expensive or you can leave them un hooked and deal with the lack of torque under 3000rpm.

Anything else im on roll here?!?

Thanks

IIRC there is one you can use for the CA, but I cant for the life of me remember.

Have your performed the ecu dignostics mode 3? There could be a problem with your ecu temp sensor.

The cold start condition will still be used regardless of season as the system works on engine temp not ambient temp.

When the engine temp is low (ie cold start) fuel is injected into all four cylinders simultaneously twice per cycle, instead of warmed up firing order (1-3-4-2). This condition also occurs for start cranking and heavy load.

The engine temp sensor is a major component of this process, if for some reason the ecu cannot detect it, it will cause some of the rich fuel issues you are experiencing.

If you are unsure how to perfrom the diag mode 3, I can post the relevant information...

Thanks

Check out the sticky with all the ca common faqs..

Ok here we go, I went ahead and got the ecu tuned and purchased a SAFC II. Installed those just fine, got a new throttle body with a TPS sensor and works fine. Installed a z32 maf not sure the voltage on that but its installed. Got a Innovate Wideband not installed yet, and a AEM oil pressure gauge, with a mess of other goodies.

I go to start it up and has a worst boost leak than before, im getting around -11 on the boost gauge. So then I unhook a vac line and it starts to idle better... it makes no sense. I just want this thing running! If anyone can shoot me some more help that would be great. What would it run like if the turbo was blown?

Thanks

Z32 MAF, is it sealing properly? lose connections between air filter and MAF or MAF and turbo intake.

Throttle Body, again is it sealed properly. My throttle body shaft seal was leaking on mine. But a boost leak test made that clear to me. Double check that stuff, good luck man.

Oh ya i re-read your thread. FYI after months of boost leak testing i can only get 16 psi on vacuum on idle. I hope thats reassuring

Thanks

It sounds like its not letting it boost or get air. It is still running really rich also.

low vacuum=leak

How new is your turbo?

Quote, originally posted by wynnEZ »

Vent Hoses this also doesn't seem right :

if that helps...

You should be able to find the pdf of the manual online, if not I will see if I still have mine somewhere...

From what nick has told me, it seems like the guy you bought it from didn't know what he was doing with it and made a mess of it.

Quote, originally posted by gabossie »

Ah, the days of watching MTV on mute after school with my pants around my ankles... being 16 was fantastic.