Ali SC3's "Workin on it" thread
http://www.dsmtuners.com/threads/bui...nifold.273139/
engine is out and going to start prep for its new home. its still lexus related cause I stuffed the entire thing into the back of my GX, with space to spare for my toolkit =)
Thanks. believe it or not the xs power turbo it still on the car and kicking, haven't had an issue with it yet but I do plan to swap it out for a BW after the audi madness is over. I will probably keep it for another project or backup but its been a pretty decent little turbo, doesn't make the most power in the world but the spool is pretty good.

I got some time to uninstall the jdm 6 speed ecu + map ecu last night and throw in the aem ems v1.
uploaded the tune I had come up with from one of my earlier tunes.... that went pretty well.
Went to start it.. just keeps cranking. getting stat sync'd. everything else is looking good.
Guessing the fuel must be off and/or I need to adjust the timing, will try again later on tonight.
It would have been nice if it started cause it would make it much easier to set the timing then.... oh well aem makes me do everything the hard way. The weather is warm also so it better start at some point lol.
I run wasted spark vvti coils and am pretty happy with them, and am not planning on using flex fuel so for me the v1 works just fine and they have dropped in price alot so its pretty affordable (I have like 3 different project cars so I try to save where I can). if I run E85 it will be all the time, so I don't need flex fuel either.
I think I narrowed it down to being timing, or I may need to change the wiring for the coils at the ecu back to just having 3 wires (its currently setup like the tt ecu mod where 6 wires go to 3). I thought it would run fine with the 6 > 3 cause I think a supra would be wired like that from factory.. but if I can't get it to start tonight its on my list of things to try.
Really hope I get it running at least because there are a couple meets tomorrow I would like to drive the car to lol.
Celebrating Lexus & Toyota from Around the Globe
Figured out the AEM v1 I got isn't turning on my fuel pump, when I jump B+ and Fp in the diagnostic port the car starts and runs, very annoying. looks like I may have to send the ecu into aem because it doesn't seem to be a software issue and I refuse to leave my fuel pump hotwired to the ignition. there goes some more $$$ lol.
I redid some of the vac lines to go back to the map ecu and as a shortcut I connected it off the line coming from the vac block to the heater... and couldn't figure out a hesitation issue, the ecu was not consistent in AFR's anymore and knocking and whatnot and dumping more fuel.
I decided that the vac line must be it and redid the lines to come off the center of the intake manifold, and that line is only teed with the FPR, and when I started it, perfect idle, perfect cruise, perfect part throttle, knocking 95% gone (I do have some carbon built up that I need to clean out at some point but nothing major).
So yeah, they are not kidding when they say connect the line directly to the intake manfiold, do not use a vac block ever, it was like driving a completely different vehicle.
glad to see she is back in action and going driving quite nice. now I can enjoy it till I tear it down this winter and do motor upgrades and the trans swap. Aem v1 will be sitting on a shelf till then.
I still want to turbo a 1uz almost everytime I see a sc400... gotta leave something for 2017 right?? =)
I redid some of the vac lines to go back to the map ecu and as a shortcut I connected it off the line coming from the vac block to the heater... and couldn't figure out a hesitation issue, the ecu was not consistent in AFR's anymore and knocking and whatnot and dumping more fuel.
I decided that the vac line must be it and redid the lines to come off the center of the intake manifold, and that line is only teed with the FPR, and when I started it, perfect idle, perfect cruise, perfect part throttle, knocking 95% gone (I do have some carbon built up that I need to clean out at some point but nothing major).
So yeah, they are not kidding when they say connect the line directly to the intake manfiold, do not use a vac block ever, it was like driving a completely different vehicle.
glad to see she is back in action and going driving quite nice. now I can enjoy it till I tear it down this winter and do motor upgrades and the trans swap. Aem v1 will be sitting on a shelf till then.
I still want to turbo a 1uz almost everytime I see a sc400... gotta leave something for 2017 right?? =)
How did you know it was knocking? Are you using the GM knock sensor with the MAP ECU?
Turbo 1UZ! Do it!!
the knocking... lol... its loud, I can hear it from inside the car when it happens but it only happens on part acceleration, I think its a spark knock of some kind. retarding the distributor does not help. if I put the pedal past like 20% into boost it completely disappears.
It never used to do it before but after the last FFIM change I had the PCV hooked up to the FFIM, and it just covered my pistons in oil and built up alot of carbon, why it did that with the FFIM and not with the stock intake I still don't know. I removed the PCV and I put some cleaners in the tank that helped but the problem is I don't drive it enough. now that its running well and a little less rich after tweaking the map ecu again I am going to give it the ol' italian tune up until it clears itself out.
There is no way I am pulling the cylinder head to clean it, I will do a piston soak before that.
oh and I have confirmed sea foam is useless in helping the carbon on the piston tops, all it does is smoke and smoke, did it like a half dozen times. the most effective thing was putting that BG 44K in the tank, I can already feel it clearing up after a couple drives. now that I can drive it on a regular tune hoping it will sort it out.
I will definitely get around to building a turbo 1uz, just a matter of when. right now I have 3 cars (thankfully I am back to 2 of them running) and 1 garage and the math just isn't working out in my favor. the toughest part will be picking the chassis, sc400 or gs400 or toyota pickup... I like them all to be honest.








