Topic: 98 Boosted short tacoma (3rz turbo)

[Crunchy Taco]

few recent pics just for fun

[Nation]

Looking good man! Finally getting back around to mine. How is that thing running these days? Any dyno runs?

[Crunchy Taco [OP]]

still no dyno runs but I'm guessing I'm right around 220hp. ko racing is close to my house and will put me on the dyno for 60$ but I just havnt got around to it. I got it tuned better than it's ever been now with the 3 1/2" exhaust all the way back. got pretty good at tuning that urd maf calibrator. it's been tuned at 7 psi wich is pretty much max with the pink top injectors that I got. gotta run premium gas as well. I've tried 8-10 psi a few times and it just dosnt like anything above 7. I think my injectors are at their limit Cause I feel like my piggyback would tune up to 10 psi but idk about much more than that. I'm pretty happy with the power at this point anyway really just want to get some better equipment. that last manifold I bought is a real pos I'm now lookin at a diy log manifold from tread stone and as always I still want an external waste gate and a nice front mount ic and new bov. I'll keep the turbo I have cause it's rebuilt and I like the way it spools. it's a Garrett t3 with a .48 compressor pulled it off a Volvo wagon it's one of the bigger turbos Volvo ran back in the day.

[Crunchy Taco [OP]]

I recently installed air conditioning back on my truck and had to move my intercooler and piping all around AGAIN but I don't have to die on hot days sitting in traffic anymore and it's awsome that my ac lines fit around the turbo with some finagalin. I think the next manifold I'm lookin into will hang the turbo about 1 1/2" closer toward the cyl head so should give a little more room cause right now the ac lines are really close to the exhaust housing. I have them all wrapped up but still it's hella hot right there.

[helipilot77]

You should throw a simple aluminum sheet heat shield between them.

[Crunchy Taco [OP]]

yea that's a dam good idea thanks. I do have some 1/8" aluminum sheets. I could bend a piece into a heatshield around the exhaust housing and protect a lot of other things from the heat too. I was guna buy one but making one would be way cooler.

[Nation]

yeah, im running 7psi as well. Injectors are maxed out..bat 4.5 psi i was making 165HP and 200lb ft tq. With the stock ecu.. When i installed the megasquirt i bumped up to 7psi and the truck is actually pretty quick. I wouldn't mind seeing 10psi though.. Maybe 12..

[Crunchy Taco [OP]]

that's cool sounds like you got the mega squirt workin well. you seein some good afrs and got it idleing good and all that?  I've really been reasearching a lot of stand alones and piggybacks. I don't kno when I would have time to install a stand alone unless I buy a pnp setup. paradise racing has plug and play patch harnesses wired up for haltech sprint and platinum sport stand alone. better bring the $ though cause they're not cheap. someday I hope to be tuning on one of those setups so many possibilities with those computers it's freakin endless

[Nation]

Megasquirt is kinda finicky. Sometimes it idles great. Other times it idles around 1300 rpm. It sat for about 6 months and i started it up and the truck ran like crap. Had to re-tune it. It has a lot of cool features for sure, but i cant get it to idle properly and it seems to run different AFRs at times. I was told to research ECU Master and they have a very reliable and easy to tune platform/software. I may sell my MS and wiring harness for the 3rz and get an ECU master if i cant get it dialed in here soon.

[Crunchy Taco [OP]]

I was looking at ecu master it got my attention for sure. I'm sure if you screw with your ms for awhile you'll figure new things out all the time. I'm still learning new things with the simple piggyback as far as what my motor likes but I'm ver limited and its frustrating. got a few rich areas that are only possible to smooth out with adding other devices to the one I have. I'd rather just buy a computer that does it all than stack a bunch of piggybacks.

[Crunchy Taco [OP]]

video https://www.youtube.com/watch?v=WSuHmkIH5sw

[Crunchy Taco [OP]]

in the video the second little pull I did I had some knock goin on. that's when you get to see what quality of gas certain stations have. it never does that when I buy from chevron. also the first pull my afr was a little lean. a couple different things that can happen when you're are tuned to run premium fuel and the station you stop at gives you some crap they say is premium.

[Crunchy Taco [OP]]

also sometimes when I'm cruisin on the freeway and wot from 60 mph I'll hit almost 10 psi but when I'm pullin from a dead stop I never get over 7psi. I'm convinced this is because when I'm cruisin tge hwy the intercooler is doin its job and gives me a bit more boost. a little proof that colder air makes more power. funny all the little differences I notice daily drivin this setup.

[Crunchy Taco [OP]]

built a new exhaust. down pipe to a 3" mini bullett muffler.

[Crunchy Taco [OP]]

 I was running my upstream o2 sensor and wideband sensor down pretty far on my previous exhaust. now that I put them right of the turbo I'm gettin more accurate afr readings they don't jump around as much now I'm pretty happy with the outcome. my downstream o2 bung is welded in right before the muffler. my new exhaust is loud but not as loud as I thought it would be. definatley have a bit more power.

[Crunchy Taco [OP]]

also the exhaust bein so short I mounted it to my bell housing and it moves with the motor so no more stress from movement.

[twistedtoy92]

I still think you should try out WM rollin on about 5 psi. You could pull 10 psi easy and lower the EGTs...

[Crunchy Taco [OP]]

yea I kno that would be sweet. the truck is actually for sale as of right now. life's changin a lot lately

[Crunchy Taco [OP]]

it's located in Portland Oregon if anyone is interested

[Blk Scout 800]

Great build