Nordic Stg4 ECU install "dumb question" - The Saab Link Forums

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Old 08-21-2008, 02:39 PM   #1
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Nordic Stg4 ECU install "dumb question"

I just installed my Nordic Stage 4 ECU today... What psi does it spike to? because I'm pretty sure its not 10 or 9...
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Old 08-21-2008, 02:58 PM   #2
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should be 20ish.

You need to check basic stuff first. Make sure your bpc is hooked up correctly, and functioning. Check for vacuum leaks, etc. Make sure base boost is set correctly (7-10psi is what it should be at. install helper springs to increase base boost as opposed to tightening the rod).

That should give you a few things to check.
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Old 08-21-2008, 03:40 PM   #3
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when i come to a complete stop after doing 2000-4600rpm runs. let the car sit for a moment at idle... i can hear a weird sound like whales... or a distant fog horn coming from my gas cap... when i release the gas cap its forcing massive amounts air pressure. mind you my gas gauge is fluttering up and down 0 to max fuel to half to where it should be... fuel pump issue?

whats the nordic stage 4 boost max psi?
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Old 08-21-2008, 03:42 PM   #4
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should be 20ish.

You need to check basic stuff first. Make sure your bpc is hooked up correctly, and functioning. Check for vacuum leaks, etc. Make sure base boost is set correctly (7-10psi is what it should be at. install helper springs to increase base boost as opposed to tightening the rod).

That should give you a few things to check.
BPC has not been touched since i bought it... i did check though... w - wastegate c-compressor blah blah blaaah...
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Old 08-21-2008, 03:43 PM   #5
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unplug the bpc's electrical connection, and plug the line going from the compressor directly into the wastegate, to check base boost.
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Old 08-21-2008, 03:56 PM   #6
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when i come to a complete stop after doing 2000-4600rpm runs. let the car sit for a moment at idle... i can hear a weird sound like whales... or a distant fog horn coming from my gas cap... when i release the gas cap its forcing massive amounts air pressure. mind you my gas gauge is fluttering up and down 0 to max fuel to half to where it should be... fuel pump issue?

whats the nordic stage 4 boost max psi?
Are you sure you didn't put an obd1 box in an obd2 car or vice versa? That would cause a vacuum to be pulled on the tank since the evap controlsare totally different

Ps this is very dangerous if you have



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Old 08-21-2008, 05:59 PM   #7
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when i come to a complete stop after doing 2000-4600rpm runs. let the car sit for a moment at idle... i can hear a weird sound like whales... or a distant fog horn coming from my gas cap... when i release the gas cap its forcing massive amounts air pressure. mind you my gas gauge is fluttering up and down 0 to max fuel to half to where it should be... fuel pump issue?

whats the nordic stage 4 boost max psi?

Sounds to me like maybe you don't have the 3.5 bar FPR on correctly
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Old 08-21-2008, 06:13 PM   #8
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unplug the bpc's electrical connection, and plug the line going from the compressor directly into the wastegate, to check base boost.
I'll have to give that a try... I have a saab mechanic fixing up some stuff for me... he said he'd take a look at the ECU and scan it to see whats up... that should tell him if its an OBD1 or 2 ECU right? Hopefully this all gets sorted out... I cant wait for it to be running properly.
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Old 08-21-2008, 06:22 PM   #9
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can i assume that you have a talladega ng900?
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Old 08-21-2008, 06:26 PM   #10
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I do... 1997 talladega...
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Old 08-22-2008, 06:42 AM   #11
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If this is one we sold email me your name and Vin I can help..
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2.0 GOOSE 500whp + 8500rpm = 11.06 @125 E85
Viggen 439whp / 447tq 12.43 @114 on Gt2871.64, (Now 511whp Gt3076)
Nordic E85 9-3 SS Aero 320hp / 350ftlbs
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Old 08-22-2008, 01:11 PM   #12
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would having a non spark plug fouler in my 3inch JT w/out cat exhaust system cause this issue? i put one in to avoid popping a CEL
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Old 08-22-2008, 01:27 PM   #13
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I would not run it.. You are going to crack the fuel pump and or tank. You have the wrong ECU in there.

I assume since you did not contact me that this is from outside source.
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2.0 GOOSE 500whp + 8500rpm = 11.06 @125 E85
Viggen 439whp / 447tq 12.43 @114 on Gt2871.64, (Now 511whp Gt3076)
Nordic E85 9-3 SS Aero 320hp / 350ftlbs
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Old 08-22-2008, 03:53 PM   #14
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I would not run it.. You are going to crack the fuel pump and or tank. You have the wrong ECU in there.

I assume since you did not contact me that this is from outside source.
yeah most likely its OBD1... its a legit nordic ecu but bought used from a friend. im just going to give it back to him.
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Old 09-12-2008, 10:21 AM   #15
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stage 4 issues

So again... nothing past 10psi...

I've unplugged and replugged the BPC. Ran it.

Unhooked the terminal and reset. Boosted 3000-4600 (out of a pissy rage held every gear)

The only thing I've yet to try... Checking the base boost running a hose from the WG to the compressor.

weird happenings- fuel cap still makes a humming noise and when I slowly release it theres tons of suction from inside the tank. Some horsepower gains while boosting 10psi more so than with a stock ecu/mbc set for 10.

im stumped... I'd really like to see this thing hit 20psi

hardware installed- stage 4 custom tune, tdo4hl-15t 5cm, 3" JT turboback, GS intake, GS inlet pipe, stock fmic (new fmic sitting in my lap)
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Old 09-12-2008, 10:50 AM   #16
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is this the tune you bought from someone?

sounds like an evap issue due to the vacuum on the tank...



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Old 09-12-2008, 10:52 AM   #17
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is this the tune you bought from someone?

sounds like an evap issue due to the vacuum on the tank...
x2

Is it an obd1 ecu in an obd2 car?
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Old 09-12-2008, 11:01 AM   #18
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i asked that last time he posted about issues and never got an answer....



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Old 09-12-2008, 12:08 PM   #19
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Quote:
Originally Posted by TheTalladegaKid View Post
when i come to a complete stop after doing 2000-4600rpm runs. let the car sit for a moment at idle... i can hear a weird sound like whales... or a distant fog horn coming from my gas cap... when i release the gas cap its forcing massive amounts air pressure. mind you my gas gauge is fluttering up and down 0 to max fuel to half to where it should be... fuel pump issue?

whats the nordic stage 4 boost max psi?
I have had the same issue with the fuel gauge fluttering over the past two or three days. The viggen is pretty much stock other then the GS intake. I don't know what the deal is...
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Old 09-12-2008, 01:22 PM   #20
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x2

Is it an obd1 ecu in an obd2 car?
i dont think so... it should be an obd2 in and obd2 car atleast thats what the kid said.
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