Dyno Results!

[turboshadow]

1st run is 11 degrees timing
2nd run is 15 degrees timing
Still only getting 16psi and wayyy rich

[2.216VTurbo]

Third run, drop the fuel pressure a few PSI?

[cordes]

Is your boost spiking right there or what?

[turboshadow]

Is your boost spiking right there or what?

Torque converter lock up

[cordes]

Torque converter lock up

I didn't even realize that your car was an auto.

[GLHNSLHT2]

take out 20% of the fuel and you'd be right there.

[turboshadow]

Ya im going to start looking into a afpr. My set up is t2 injectors on a stock t1 cal.

[GLHNSLHT2]

Maybe just drop a T2 SMEC in there? Be cheaper than getting an afpr

[moparzrule]

Mitsu turbo? Whats your whole setup?

[R/T]

I knew we were waaaay rich, but wow!!

And we need to get it to hold 18/20 PSI like it used to.

I'm reall happy with the timimg change, 3* = 10hp and 20 ft lbs...

We have homework to do, but considering it went high 13's like this, I see a bright future....

Good info.

[turboshadow]

Mitsu turbo? Whats your whole setup?

Yup a mitsu, 2.5inch side exit, graiger, cut out razor, big ebay intercooler, t2 injectors, and intake.

[BadAssPerformance]

First off, nice Dyno runs!

Third run, drop the fuel pressure a few PSI?

take out 20% of the fuel and you'd be right there.

Ummm... turbo car? to lean it out, its more fun to add boost than to reduce fuel

I knew we were waaaay rich, but wow!!

And we need to get it to hold 18/20 PSI like it used to.

I'm reall happy with the timimg change, 3* = 10hp and 20 ft lbs...

We have homework to do, but considering it went high 13's like this, I see a bright future....

Good info.

Exactly, 18psi FTW! If its that rich, i'd try that first and nothing else except maybebacking timing off a tad. 1° is on the edge of being high on the timing tho at higher boost... Maybe cuz timing is what melts stuff, but I always thing 14° is the theoretical best limit? Remember 1° on a 4cyl is like 2° on a V8...

EDIT: And I would not say that 11:1 is waaaay rich...

[GLHNSLHT2]

Ummm... turbo car? to lean it out, its more fun to add boost than to reduce fuel

Sure that works if you're beyond what the map can see and if your setup can take it. Is the OP on lightweight rods? Not sure raising the boost is a great idea there. Also it's richer in the lower rpms, leaner in the mid range and richer on the top end. Need to play with the pumping efficiency table some in the cal to fix that assuming the boost is equal throughout the rpm range. But by doing that you could pick up more power at both extremes and use less fuel to boot

[Anonymous_User]

18/20 on a mitsu? Will the increased boost lean out the mixture or will it simply superheat the intake charge?

[moparzrule]

18/20 on a mitsu? Will the increased boost lean out the mixture or will it simply superheat the intake charge?

I've run 24 PSI on the mitsu, on pump gas. As long as you have a decent IC it will be perfectly fine at 18-20. Stock T2 IC might get heat soaked quickly, I had a large FMIC so I can't say for sure but mine was fine. Upper pipes were still cool to the touch, lower pipes hot but not burn your hand off hot.
And as JT mentioned, I wouldn't call 11:1 a very rich mixture. I shoot for 11.5-11.8 myself.

[Anonymous_User]

I've run 24 PSI on the mitsu, on pump gas. As long as you have a decent IC it will be perfectly fine at 18-20. Stock T2 IC might get heat soaked quickly, I had a large FMIC so I can't say for sure but mine was fine. Upper pipes were still cool to the touch, lower pipes hot but not burn your hand off hot.
And as JT mentioned, I wouldn't call 11:1 a very rich mixture. I shoot for 11.5-11.8 myself.

Interesting. I haven't run a mitsu on anything bigger than a Probe IC. And that was many many years ago.

[turboshadow]

I can usually get about 18/19 out of it but lately its been hard and to get, it seems to be around 16. Im going to go through all my map lines and IC stuff to check for leaks but thats going to have to wait till spring

[moparzrule]

Interesting. I haven't run a mitsu on anything bigger than a Probe IC. And that was many many years ago.

The probe IC has no internal fins IIRC, that means poor cooling ability.

[GLHNSLHT2]

I'd say if you're loosing boost on the mitsu it's more than likely on it's way out.

[ShadowFromHell]

I REALLY recommend going to a T2 computer. REALLY REALLY REALLY recommend it. I have a 88 shadow es, and while it had a t2 swap, with a t2 turbo I ran it for quite a while on the 88 T1 computer. Once I tracked down a T2 comp and swapped it in, I was kicking my self for not doing it sooner! It made a HUGE difference in SOTP power. The 88 T1 computer was a one year unit, and I think it was programed very conservative to keep the non-ic T1 cars alive. You have the large FMIC, I would really take advantage off the T2 computer at this point.

While I can not verify this, because it was so many years ago. I THINK my shadow went from 15.4's to a 14.6 by changing to the T2 computer. The reason I am not sure about this, is because I never purposely ran the car under 20psi once I swapped to the T2 computer. Before the T2 and the 20 psi of boost the car ran 15.4's. But, I ran a dual stage boost controller, 14 and 20 psi. I made a pass one time and ran a 14.6. I couldn't figure out why I had lost 6 tenths, until I realized I hadn't bumped the boost up after getting out of 1st. But this was 5-6 years ago, and I am not 100% on those numbers. I had also gotten alot more seat time in between those runs, and had got alot better at driving the car. I don't think your gonna pick up 8 tenths, but I think its pretty obvious, its a worthy upgrade.