The 15 Y/O Turbo M42 Build Thread (Now Holley EFI Terminator X Controlled)

[Schnitzer318is]

yea but I pretty much chopped mine all up and built it the way i wanted. So my pipes route a little different.

to solve the issue I need to weld in a flex section to my down pipe. I think it happened when I came out of a parking lot and scraped my exhaust. Too much stress and it just snapped.

also Just now reading your previous post. Ill send you my file!

I had to add (well, have my exhaust guy add) quite a bit of gusseting to the mani to stop cracking. The weight of the turbo and downpipe was causing multiple failures. Now you could drive a tank over it. I've scraped/hit the exhaust many times since and not had any issues.

Send the whole project please, not just the msq. If you send just the file my Tunerstudio gets pissed off.

[MF DOOM]

^^^ :(

[wazzu70]

Do not like...

[Dj Buttchug]

Weaaaaaaakkkkkssssaaaaauuuuuuccccceeeee... Been there too.

You using m50 mani flipped upside down with last 2 cylinders chopped off?

yea but I pretty much chopped mine all up and built it the way i wanted. So my pipes route a little different.

to solve the issue I need to weld in a flex section to my down pipe. I think it happened when I came out of a parking lot and scraped my exhaust. Too much stress and it just snapped.

also Just now reading your previous post. Ill send you my file!

[Schnitzer318is]

Weaaaaaaakkkkkssssaaaaauuuuuuccccceeeee... Been there too.

You using m50 mani flipped upside down with last 2 cylinders chopped off?

[Dj Buttchug]

todays update: cracked manifold. many noises, much leaks, little bewst, no bitches

pics tomm

[Schnitzer318is]

^That's pretty cold. Mine will fluctuate a little... but not nearly that much.

I am running an 89C thermostat I believe. No drilling though. On a warm day sitting in traffic I'm at like 185ish with the efan on... basically same temperature as if moving at highway speeds with no efan. Mine never fluctuates like you describe unless I switch my efan on in traffic... then temps will go from like 205 back down to my normal operating temp of ~185. I run mostly water too... doesn't get that cold here in TX.

I'll keep looking for you to post your msq. Still want to do a full comparison to what I am running. Mainly because you are running no ICV and getting a nice start and idle. With no ICV I have a helluva time.

[Dj Buttchug]

avatar'd lol

[TheTacoMan]

It may not be a gif but.....
Take that. ;D

[Dj Buttchug]

Well it certainly cant hurt to replace the Tstat with another and see if it solves your problem. Hopefully it does the trick.

Im definitely not at 65c on the freeway.

its not really thats its a problem its just kind of annoying. It still runs well but from stop and go my temp fluctuates so much. My cluster temp gauge reads just above the cold mark when at speed. I can watch in drop down lol

[wazzu70]

Well it certainly cant hurt to replace the Tstat with another and see if it solves your problem. Hopefully it does the trick.

Im definitely not at 65c on the freeway.

[Dj Buttchug]

Are you using the live VE analyse to sort uot your VE tables? Its the best way by far. When you do this, disable EGO correction. Your fuel map should be really good just after a couple drives.

Also what do you mean by drilled thermostat? Where do you drill? I drill an 1/8" hole on the outer rim of the Tstat and put the hole on the top to help with bleeding air from the system. It should not cause any real noticable difference on cooling system function though.

Im working with the auto tune feature. I drilled my t stat to help with coolant system bleeding. However, I drilled a whole thats pretty big. My car will heat up at a stand still but driving on the freeway my temp drops back down to 155 ish. I drilled right around the rim probably just like you did.

I also had an 88 C stat to begin with. I want a more stable operating temp so I can tune properly.

[freeride53]

damn im super feelin the rimz

[wazzu70]

Are you using the live VE analyse to sort uot your VE tables? Its the best way by far. When you do this, disable EGO correction. Your fuel map should be really good just after a couple drives.

Also what do you mean by drilled thermostat? Where do you drill? I drill an 1/8" hole on the outer rim of the Tstat and put the hole on the top to help with bleeding air from the system. It should not cause any real noticable difference on cooling system function though.

[Dj Buttchug]

Nice... big time congrats. Always feels good to solve an issue like that. I still remember pre-boost I had a helluva warm starting/running issue. Turned out to be that the wire in the loom was hooked up for no catalytic converter cars. LOL I just plugged it in during the engine swap thinking it was supposed to be plugged in. It is supposed to be unplugged if you have a cat. That took me almost a year to find.

Have you done anymore tuning on the car? I was looking at my tune and your req_fuel is not that far off mine. I think mine was 6.0 (calculated by TS req fuel calculator) or something like that. Was curious what you ended up with.

I have. I did some more yesterday and ive ended up with a req fuel of 6.3

Im still working my ve tables a bit because ive got some areas where the engine islean still. Once I get dialed in completely ill post my whole Msq.

Ive also got an over cooling issue. I put in a drilled thermostat way back when and its turning out to be a huge mistake. Ill go from 190 down to maybe 150 degrees depending on how much air is moving past the car. Its screwing with my warmup so Im going to swap that out today.


thanks for all the comments guys!!