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wgknestrick
07-18-2005, 11:18 PM
Just got a chance to get my pipes on from the powdercoater. I just have to verify that I have no vacuum leaks then off to get retuned. I think the project turned out fairly well.

Car will barely run on stock ECU with the blow thru MAF and hardly has any vacuum, plus it knocks badly at idle. :( On the Hydra (standalone ECU) car runs great and pulls 20inHg vacuum. :eek: This may be a tough one to solve.

Bill


http://users.rcn.com/wgknestrick/STI%20049.JPG

http://users.rcn.com/wgknestrick/STI%20050.JPG

http://users.rcn.com/wgknestrick/STI%20052.JPG




Only good pic of the turbo (work in progress here)
http://users.rcn.com/wgknestrick/STI%20031.jpg

alachua
07-18-2005, 11:43 PM
Is it possible the coolant shower we gave the MAF last night may have screwed it up? It seemed to be running fairly well when we had the MAF unplugged on the factory ECU, we should try that and see how it works (assuming you can unplug the MAF from the harness end, since its impossible to get to the damn sensor itself).

-Cliff

criz
07-18-2005, 11:45 PM
siiiiiiiick

GOOD LUCK BILL

slaab
07-18-2005, 11:51 PM
Looking good Bill, hope all goes well with the tuning.

wgknestrick
07-18-2005, 11:55 PM
I'm not sure if coolant would render a MAF dead. I figure if you can spray un-chloranated brake cleaner on it, coolant should be a walk in the park.

I just need to construct a 4" plug with a valve stem to pressurize the manifold to check for leaks. I still don't know why vacuum would be low with one ECU vs the other. All that is changing is the electronics unless the Hydra (standalone ECU) can't seal off the vacuum line when there is no power to it.

MAF is blow thru too.

Any thoughts??

alachua
07-19-2005, 01:25 AM
well, If i could find a good conversion calculator, we could compare your vacuum to mine, since my hydra is just sitting there disconnected as well...though I am pulling .6 - .7 bar (60 - 70 kPa) vacuum, which according to this converter (http://www.anver.com/document/company/Reference%20Guides/vacuum.html) is about 20-21 inHg. So it seems I'm not having any issues holding vacuum.

The only real differences would be that the factory ECU is still looking at the MAF voltage, and perhaps a warm up cycle, assuming you ran it on the factory ecu then swapped in the hydra. Any idea what type of voltage the MAF is showing using they hydra data logger? I read somewhere earlier tonight what the MAF reading should be at idle, but I can't for the life of me remember it off the top of my head. I think it was either in one of the threads listed in the Unofficial official hydra thread, or in one of the tuning or setup guides on element's site. If they voltage is way off, that would probably account for your det and idle issues, but it still doesn't make any sense that you are losing vacuum...

-Cliff

TROLL
07-19-2005, 01:57 AM
thats sooooo pretty.
bryan

teh DIRT
07-19-2005, 02:53 AM
congrats....first sti on tst with a rotated turbo and intake mani setup.
-pete

S4toSTI
07-19-2005, 09:58 AM
Thats sick very nice which aps turbo is that

seneca
07-19-2005, 10:24 AM
nice farking work Bill... oh btw its not an aps turbo its forced performance and he got the compressor coated along with everything else. Let me know when its time to get Phil up here casue my sr55 is in and runngin nicely.

olmytsi
07-19-2005, 10:31 AM
Red turbo... :thumbup:

wgknestrick
07-19-2005, 10:45 AM
I ditched work today to sort out these problems. I made a 4" cap with a valve stem in it to pressurize the manifold to test for leaks......

****, ****, ****

I have about 20 leaks to sort out. I think I found out any kind of textured powdercoating is bad juju on IC tubing. I think the textured powdercoating is allowing the air to escape between the ridges of the texture. The clamps have to be super tight to seal even at 10psi of air. I just can't believe how many leaks there are. Even the new MAF housing is leaking around the sensor and that has a O-ring in it!

I've fixed about 10 leaks so far. It is just hard because I put it back together to test, then have to rip it back apart to fix. Very frustrating.

seneca
07-19-2005, 10:48 AM
Sorry to hear about your leaks Bill but Im sure you will get it all worked out. Are you actually griding the powder coating away at the joints to get it to seal properly?

alachua
07-19-2005, 10:57 AM
:bigeek: :furious: :thumbdow: damn it....well, at least that is a 'simple' fix, compared to some stuff it could be.

-Cliff

wgknestrick
07-19-2005, 11:41 AM
Down to 2 leaks, aut, aut, aut (sorry for The Count reference). I don't know how to fix this MAF leak though. I guess RTV is my best friend right now.

Anyone know how long a manifold should hold pressure for??? to be considered adequate?

TalonTsi97
07-19-2005, 11:48 AM
Red turbo... :thumbup:
Exactly what i was going to say. It looks good. Good luck gettign it fixed.

Shades of Gray
07-19-2005, 11:23 PM
where did i miss this! I've been thinking of reversing the IM sinse SEMA. you have to tell me whats involved...or where its discussed!
thanks
ryan

wgknestrick
07-20-2005, 07:08 AM
http://forums.nasioc.com/forums/showthread.php?t=807772&page=1&pp=25