I have a 88 GXL turbo 6 port with the following mods. China t45 turbo, 24x12x3 fmic, 3" intercooler piping, no omp or ratsnest, s5 tii injectors, 40mm external wastegate, 4" exhaust with a 5x8 oval magnaflow muffler, s5 tii alternator, aluminum radiator with aftermarket thermo switch, aluminum hood off of 86 auto and doors off the same car, emanage ultimate (not installed yet waiting for 3 bar map sensor hope to get it friday) Walbro 255 fuel pump. All this running on a s4 6-port on a n327 ecu.

I just put another enging in it and had it running off these injectors but had a major bog down at half throttle so thinking i had bad secondary injectors I changed then to some s5 na injectors then it would not start at all. So i put the other injectors in it and still wont start. car is flooding bad ive been deflooding the car and pulling the spark plugs and drying them with a heat gun. fuel pressure is 40 in line and 70 deadheaded to the pump return pressure dosent drop to under 15 for about 15 minutes. I have tested the thermosensor, cas, tps, has a new afm (tested it as well), no vacuum leaks, great spark, new o2 sensor. When I put the doors on I just cut the wires to the original ones and the car has no stero in it.

Satch said to cut off fuel to the injectors and try starting it with starting fluid but I havent had a chance to run to my shop to try it yet. Anymore ideas to try while Im down there? I would really love to get the car going this next weekend cause I have a 4 day weekend coming up to work on it.

 

What if I got the wires crossed on the injectors when I put the different connectors on could that be a issue?

 

Depends on what you mean by "crossed". And do you have the resistor pack for the fuel injectors hooked up? Your s4 ecu needs the resistor pack to make the fuel injection purge fuel.

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Nevermind*** I just reread your post about it flooding... So yea your gettin fuel. Duh me...😳

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N327 Ecu is an S4 N/A Ecu.
you need a N333 or N332 (TII ecu).S4.

 

does polarity of the injector matter?

 

why do i need that ecu? The car was running great on the old ecu with the original engine

 

As long as one terminal receives voltage and the other is connected to the ECU, the wiring order does not matter.

 

No, it doesn't.

 

Thank you I did not think it did.

 

So you're trying to use 550cc injectors and a winebro 255 pump(which can/will overrun the stock regulator) on a ecu designed to run 460cc injectors. You will need an aftermarket fpr to deal with that setup.

 

Thank you. Already got one coming should be here with my greddy 3-bar friday

 

You've probably already flooded it out trying to start it. Take the plugs out and clean them well and do a deflood procedure. Since you have an s4 car the afm is also the fuel pump switch, with the ignition i nthe on position(car not running) if you hold the afm door slightly open it will engage the pump, that should make it pretty easy to get the fpr set to a reasonable level initially(like 35psi).

Im not seeing you list a Widwband O2 sensor, please tell me you intend to run one on this setup.

 

No wideband yet. Only going to run 6 psi till i get one I am just trying to get it going before I put to much more into it. Should I just install the emanage after I get my stuff in and see what happens?

 

I think I figured something out. When I line up the timing marks on the pulley and the cas they should stay lined up right. I mean if I crank the engine then line up the mark on the pulley then pull the cas it should be on the mark right? Cause its not. I also ordered my wideband yesterday to.

 

No wideband + NA ecu + turbocharger and you've already gone half-throttle. So you don't know if it was a rich bog-down or a lean-bog down. What you need to do is compression check the engine first.

Banzai Racing Compression Test

And the CAS gear is (I think) 1/3 the size of the e-shaft gear. That means it will not always be lined up when you pull the CAS back out. If you lined it up properly when you installed it, then it will not jump teeth... it kind of can't do that.

 

Done and good

 

As for the ecu will the emanage ultimate not work right with the n327? Dont know if it was a righ or a lean. I will install the wide band right when I get it. If the emanage will run with this ecu should I install it as well?

 

The cas is lined up every time.

 

Your saying it should line up everytime?

 

So if you took out the CAS to see the marks lined up, did you line them up and restab the CAS to see any difference? Make sure before you restab the CAS that you have the ecc pulley TDC. On the yellow mark.

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Yes did that a few times it was 180 off

 

Your going to blow this engine in no time. Please search and get the proper parts. Im sorry but your setup is asking for death upon itself.

 

Is it my ecu? Is the emanage not going to work right on this setup?

 

So lets sum this up:
Shitty chinese turbo
Shitty wastegate
Stock TII injectors
NA motor
NA ecu

You're doing everything wrong.
Get a turbo that won't grenade.
Get a wastegate that won't fail and spike boost.
Get injectors for the power you intend to make(related to turbo size)
Get a 13bt block
Get a real ECU like Haltech,Motec,etc.

NA ecu's and "boost sensors" are intended to read vacuum only. It has no clue what your doing when the vacuum "drops to zero"
I don't even know if the NA AFM maxes out at any certain cfm. I know the TII one is good for somewhere near 300hp.

Piggy back ecu's can work but most of the time they fail because they're using 20+ year old harnesses and outdated ecu's.