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Innovative Tuning Blog - 3/15/10
03/15/10 23:17PM
05WRX Tuning, Battery Relocation, Supra 2JZ teardown, etc.
We had a crew of visitors from Erie, PA yesterday. Thanks for stopping by guys and we’ll see you soon for tuning!
With the VF43 turbo, APS TMIC, and 650cc injector installs complete, I began retuning Jon’s 05 WRX. After fighting with it for a bit I’ve come to the conclusion that the used injectors provided are either gummed up because they weren’t cleaned and have been sitting around, or the latency settings we were provided for them by the manufacturer are incorrect. He got them for free and wanted to give them a shot. I was able to get the car running pretty well, but I shouldn’t have had to make some of the adjustments that ended up being required and I’m not happy with the throttle response under certain conditions. We’re going to work with the manufacturer of the injectors today and see what we can figure out together.
The car also had an issue where the fuel pump was running continuously and randomly shutting off, making the car shut off. After testing the ECU output and wiring, we found that the stock fuel pump control unit was acting up. After replacing that part the pump primed and shut off normally and operated normally while the car was running with no issues.
In the meantime, the WOT tuning went smoothly so here are those results:
And here’s a graph showing what he came in with and what he left with. The stock 07 STI turbo we put on only spools around 250 RPM later and as you can see it holds power and boost MUCH better up top, making the torque more linear and providing a WHP gain of around 50 at 6500 RPM.
While I was tuning the guys were hard at work as usual. Tom’s 2JZ Supra engine was torn down. in preparation for a buildup to make more power in the future. We found the intake side of the head had coked oil residue in it while the exhaust side did not. It looks like the previous owner of the car let an oil change or several go way too long. The other side looked cleaner than usual and after inspection we found the head gasket had started to allow coolant and oil to mix. No big surprises were found to this point, but it looks like he picked a good time to tear this thing down.
Brian’s STI has been sitting all winter. Now it’s time to charge the battery up, get his new carbon fiber driveshaft in, clean it up, and put some miles on the new engine. More on this car and buildup to come…
We’re finishing up the work on Mike’s 2JZ MKIV Supra. Battery relocation was one of the last steps. He wanted it positioned so the removable hardtop could still be stowed in the factory location in the trunk. We still need to tidy up the wires and clean things up.
And I got myself an oldy but goody. It’s a 54” Matco bottom box with all ball bearing slides etc.
