- Dec 8, 2011
- 520
IC pipes finally back from the powdercoater. Now to get that damn bumper back on.
4200 Turbo Supra
- Thread starter limequat
- Start date
Boricua SS
Member
- Dec 8, 2011
- 520
Boricua SS said:NICE!
what kinda numbers are you hoping to put down with her?
Low boost 400 to the wheels.
Boricua SS
Member
videos please when she dialed in 
NewfieEnvoy
Member
- Jan 25, 2012
- 525
ScarabEpic22
Member
- Nov 20, 2011
- 728
Saw a video of this a while back, did it quit smokin` yet like it was when it was N/A? I remember it was blowing a little blue when you first got it done, was just wonderin if it went away with a lil` bit of use.
- Dec 8, 2011
- 520
I moved recently and am renting out my old place. That means that Oct 1 is D-Day. Everything must go. Sep 29, everything is moved except one thing: My 1987 Toyota Supra with a Trailblazer I6 engine, a Pontiac Solstice 5 speed manual, and a VVT turbo out of a Duramax. That also means that all of my tools and equipment are already moved.
I came back for the Supra carrying a small plastic tool box, a jump starter, a laptop, a HPTuners interface, and -I figured- maybe a 40% chance of success. I knew the Supra would start and run, but with the move I hadn't had a chance to do any sort of shake down run. It was 6:30 PM on Sep 30. I touched the white hood and said a small prayer to the god of engine swaps. "One more time, old friend. For old time's sake."
I popped the hood and hooked up my charger, hoping some juice would trickle in while I worked on other things. Installed the intake tube v-clamp and slid the air filter over the other end. It was already getting dark in the 4 car garage, so I pushed the Supra out onto the lawn to giver her the once over. Turbo oil feed? Check. Oil drain? Check. Coolant lines -uh- can't really see in this light. Check.
I had not much idea what state the engine calibration was in, so I pulled down whatever was on the PCM and had a look. I had to switch PCMs a while back and never updated the tune. Looking now, I could see that it was still setup for an auto trans, but most non-existent emissions systems were already disabled. The 80 lb/hr injectors were already configured. Good, that's the hard part. Worked some Lime-Swap voodoo, and started reflashed. Said another prayer to the engine-swap gods that the battery had enough juice to keep my HPTuners interface alive. Reflash complete. Shadows getting long.
Turned the key to "On." Listened to the fuel pump run for precisely 2 seconds. Left foot, clutch in. Right foot touched the accelerator. Key turned, and the engine reluctantly rolled a bit then stopped. And then started to roll again. Feathered accelerator and she barked and settled into a nice idle. And then a not-so-nice idle. The interior lights brightened and dimmed as the PCM tried to decide whether it wanted to continue running or not. Not. Stalled. Back to HPTuners. Bump idle by 200 RPM. Reflash. Turned the key and nothing. Then a slight electric whine. A cough, and she's back to life at a comfortable idle. Surely, that consumed the very last electron from my charger. It was then quite dark.
I hopped in and turned on the flip-up headlights, happy that the added alternator load didn't kill the engine. I worked the clutch extra delicately, so as to not stall. The engine sounds happy and the shifting is smooth. I had planned to take backroads on the 30 mile journey, but I can see the coolant gauge creeping to an uncomfortable position. Fuck it. Hit the freeway. We're going home.
One eye on the laptop and one eye on the gauges. I drove by braille. God, the 4200 is a sweetheart of an engine. Smooth, linear, and torquey. And now, what's this? The VVT is definitely spooling, even with the vanes fully open! I watch on the laptop as the MAP sensor maxes out at 103 kPA, even though I'm only half way through the throttle range. Oh man. I CANNOT wait to get boost control on this thing!
Other than some high-temp excursions, the trip home was easy. No stalling. No driveability problems. Now this is my driveway:
I came back for the Supra carrying a small plastic tool box, a jump starter, a laptop, a HPTuners interface, and -I figured- maybe a 40% chance of success. I knew the Supra would start and run, but with the move I hadn't had a chance to do any sort of shake down run. It was 6:30 PM on Sep 30. I touched the white hood and said a small prayer to the god of engine swaps. "One more time, old friend. For old time's sake."
I popped the hood and hooked up my charger, hoping some juice would trickle in while I worked on other things. Installed the intake tube v-clamp and slid the air filter over the other end. It was already getting dark in the 4 car garage, so I pushed the Supra out onto the lawn to giver her the once over. Turbo oil feed? Check. Oil drain? Check. Coolant lines -uh- can't really see in this light. Check.
I had not much idea what state the engine calibration was in, so I pulled down whatever was on the PCM and had a look. I had to switch PCMs a while back and never updated the tune. Looking now, I could see that it was still setup for an auto trans, but most non-existent emissions systems were already disabled. The 80 lb/hr injectors were already configured. Good, that's the hard part. Worked some Lime-Swap voodoo, and started reflashed. Said another prayer to the engine-swap gods that the battery had enough juice to keep my HPTuners interface alive. Reflash complete. Shadows getting long.
Turned the key to "On." Listened to the fuel pump run for precisely 2 seconds. Left foot, clutch in. Right foot touched the accelerator. Key turned, and the engine reluctantly rolled a bit then stopped. And then started to roll again. Feathered accelerator and she barked and settled into a nice idle. And then a not-so-nice idle. The interior lights brightened and dimmed as the PCM tried to decide whether it wanted to continue running or not. Not. Stalled. Back to HPTuners. Bump idle by 200 RPM. Reflash. Turned the key and nothing. Then a slight electric whine. A cough, and she's back to life at a comfortable idle. Surely, that consumed the very last electron from my charger. It was then quite dark.
I hopped in and turned on the flip-up headlights, happy that the added alternator load didn't kill the engine. I worked the clutch extra delicately, so as to not stall. The engine sounds happy and the shifting is smooth. I had planned to take backroads on the 30 mile journey, but I can see the coolant gauge creeping to an uncomfortable position. Fuck it. Hit the freeway. We're going home.
One eye on the laptop and one eye on the gauges. I drove by braille. God, the 4200 is a sweetheart of an engine. Smooth, linear, and torquey. And now, what's this? The VVT is definitely spooling, even with the vanes fully open! I watch on the laptop as the MAP sensor maxes out at 103 kPA, even though I'm only half way through the throttle range. Oh man. I CANNOT wait to get boost control on this thing!
Other than some high-temp excursions, the trip home was easy. No stalling. No driveability problems. Now this is my driveway:
ScarabEpic22
Member
- Nov 20, 2011
- 728
Glad you were able to limp it to your new place man, I still cant wait for you to get the cooling dialed in and crank the boost. I still LOVE the VVT turbo, they can make boost at idle if you want 'em too!
ScarabEpic22
Member
- Nov 20, 2011
- 728
limequat said:^^ You and me both.
BTW, I did hook the VVT to simple on/off. Didn't notice much difference except it was really quiet when "ON" and really loud when "off". Cool
Yep, thats the only downfall of not having the PCM control the VVTurbo (realized that VVT already exists on our engines, dont want others to get confused ha). In the Duramaxes, the ECM controls the vane position to build boost at lower RPMs, fortunately/unfortunately for the I6 they love to rev. And thats a big turbo for an I6 to begin with...
- Dec 8, 2011
- 520
OK, I'm stuck on something.
The supra cuts power right about the time boost starts coming on. It acts kinda like a rev limiter, but I can rev out if I don't go WOT. I don't think it's anything in the tune, because I'm running pretty much the same calibration as another guy who has has no problem hitting 10 psi and revving to 6600.
It's not a MAP problem. I tried 1 bar, 2 bar, and no map, all with the same results.
MAF is 4" and no where close to maxing out.
Any help, this is driving me nuts! The supra feels mean as hell, but it won't let me have any fun!
The supra cuts power right about the time boost starts coming on. It acts kinda like a rev limiter, but I can rev out if I don't go WOT. I don't think it's anything in the tune, because I'm running pretty much the same calibration as another guy who has has no problem hitting 10 psi and revving to 6600.
It's not a MAP problem. I tried 1 bar, 2 bar, and no map, all with the same results.
MAF is 4" and no where close to maxing out.
Any help, this is driving me nuts! The supra feels mean as hell, but it won't let me have any fun!
ScarabEpic22
Member
- Nov 20, 2011
- 728
Whats your P0608 value set to?
Can you post a log of it? I know you have HPT, dont think you have EFILive. If you're comfortable with me looking at your tune, shoot it and the log to my email and Ill check it out for ya.
Can you post a log of it? I know you have HPT, dont think you have EFILive. If you're comfortable with me looking at your tune, shoot it and the log to my email and Ill check it out for ya.
- Dec 8, 2011
- 520
ScarabEpic22 said:Whats your P0608 value set to?
Can you post a log of it? I know you have HPT, dont think you have EFILive. If you're comfortable with me looking at your tune, shoot it and the log to my email and Ill check it out for ya.
Cool, thanks! My P0068 maf/map/throttle correlation is disabled.
Latest development, the problem goes away when the maf is unplugged (but that brings other problems).
ScarabEpic22
Member
- Nov 20, 2011
- 728
Ah yes that will do it, glad you got it sorted out. I got your email, dont have HPTuners on my work laptop and my personal one is at home. Might be able to look at it tonight or tomorrow, but dumping fuel does weird things.
Did you kill COT as well? I had that kick in on my SS when I had it on the dyno last, got 10.5:1 at 4400-5000rpms. Not good for power...
Did you kill COT as well? I had that kick in on my SS when I had it on the dyno last, got 10.5:1 at 4400-5000rpms. Not good for power...
- Dec 8, 2011
- 520
ScarabEpic22 said:
I checked in my tune and the COT conditions were set to something like 493 F. For good measure I went ahead and set COT lambda to 1.
Do you know what the entry conditions are for piston protection? In HPT there is only a RPM value. Stock is something like 3200. I just now set it to 8k rpm.
Love your swap/ turbo build you got going here! Looking forward to seeing some dialed in results! thanks for sharing!
ScarabEpic22
Member
- Nov 20, 2011
- 728
I dont know what the parameters for piston protection are, I just looked through my SS tune quickly and couldnt find it.
How's it running with COT set to 1 and the other changes?
How's it running with COT set to 1 and the other changes?
- Dec 8, 2011
- 520
ScarabEpic22 said:
Much better!
I disabled COT, piston protection, and PE for dialing in the 4" maf and 2 Bar MAP. IPW went from > 10 ms (on 80 lb/hr) to < 5 ms.
It's pretty much dialed in when warm, but it still doesn't like low load when cold. I think there's an open loop fueling table that's screwing up with the 2 bar map. Gotta check that next.
- Dec 8, 2011
- 520
ConeKilrAutoX
Member
- Dec 8, 2011
- 1,179
I chuckled at that too^^, don't we always need more boost. HAHA
Lime- Good progress! Cant wait for more! Love this project.
Lime- Good progress! Cant wait for more! Love this project.
- Dec 8, 2011
- 520
it sounds really quiet. i have a co-corker with a 2jz swapped supra like yours and his is pretty loud,it must be the different types of exhausts i guess.whats the limiter set at on your car?i elieve he said his cuts at around 6500 rpm.his car needs tuned badly
Nice work Lime. You must be having a ton of fun now. What was the reason for running a 2 bar map sensor? I should be driving my project this weekend and you have me wondering now because I have the stock 1 bar map in the intake.
ScarabEpic22
Member
- Nov 20, 2011
- 728
bruhaba said:
You need a 2 Bar MAP in order to see boost, the stock 1 Bar will only show up to 100/105 kPa or 14.7PSI aka atmosphere/1Bar of pressure. As soon as you introduce FI, you WILL be above this and max the MAP out. Depending which PCM you have will dictate my answer on this one, the P10 Id leave the stock 1 Bar in place and figure out a place to mount another 2 Bar MAP (and feed this into your boost controller/whatever you'r using to control fuel/spark in boost). P12 or E67, swap the 1 Bar for a 2 Bar and adjust for it.
OK, basically just to log it. My 06 should just carry out the last value of the ve table. I wouldn't think it's a problem like Lime said, the MAF takes care of it. Great idea though to be able to log it.
- Dec 8, 2011
- 520
bruhaba said:
Yep. From what I understand the airflow calculation uses a blend of MAP and MAF at low load and then switches exclusively to MAF in high load.
If I was going to do it over, I think I would add the 2 bar in addition to the 1 bar. The switch COMPLETELY fubar'd the VE tables. It wasn't a straight scalar. On the flipside, you can keep your stock MAP, scale a 4" MAF and have a nearly stock quality tune just like that for up to 12 psi.
- - - Updated - - -
bruhaba said:
Thanks! Still working out the kinks, but when it's happy it's like "whoa, hold the f*** on!"