Max's Turbo II - Page 6

Max777 · 11-18-2010, 05:42 PM

Well, they are nice and stiff when the engine is off, but once the vacuum booster is active, the pedal goes half way to the floor before the pads start having enough force on them to slow down the car.

Max777 · 11-30-2010, 06:32 PM

Update 11-30-10:

I've been messing with the car, and I noticed a problem when trying to adjust the TPS:

When in range, one of the LED's on the TPS sensor "tool" lights up, but the second one does not. Before I messed with the car, the TPS sensor tool lit up both LED's when you adjusted it too far.

When I unwrapped the harness to cut out the extra emission wiring, I accidentally cut out the TPS wiring...

Got another harness and soldered everything back in, and all connections seemed good, but now after I put the harness back together, only one LED lights up, and then goes out when you push the plunger in too far.

I'm assuming that I mucked up the wiring somehow, but the car starts, runs, and drives just fine below 3800rpm. Perhaps the full range of the TPS sensor circuit is messed up?

Max777 · 08-24-2011, 10:28 AM

So, ever since I tore apart my car to paint the engine bay last year, it never ran quite the same after reassembly. I messed around with it but it never got very far, always running into issues.

This summer, I got tired of trying to make it work on the factory ECU, and had Chris Ludwig install a Haltech Sprint-RE standalone ECU, thinking that this would solve all my problems. He did a great job, and my car picked up 30ft-lbs of torque from stock on a Mustang Dyno, however we ran into an issue with the factory S4 TPS. Since it's a short range sensor, it only reads about 30% throttle input. Any more, and the ECU thinks it's being given 100% throttle.

This wasn't an issue for full throttle tuning, but it did result in a lot of hesitation during part throttle cruising. The recomended fix was to install an S5 TPS and throttlebody and use the full range TPS that normally controls the OMP function.

I also managed to score a godspeed front mount kit for cheap for the same person I got the TPS from, so hopefully they get here soon.

Besides the engine woes, I also have been neglecting the rest of the car for some time. It really needs a paint job, so I've been saving up for that.

11-18-2010, 05:42 PM	#76
Max777 Pirate Join Date: Mar 2008 Location: Central IL Posts: 1,323 Rep Power: 19	Well, they are nice and stiff when the engine is off, but once the vacuum booster is active, the pedal goes half way to the floor before the pads start having enough force on them to slow down the car. __________________ Rotaries:They are NOT that complicated!

11-30-2010, 06:32 PM	#77
Max777 Pirate Join Date: Mar 2008 Location: Central IL Posts: 1,323 Rep Power: 19	Update 11-30-10: I've been messing with the car, and I noticed a problem when trying to adjust the TPS: When in range, one of the LED's on the TPS sensor "tool" lights up, but the second one does not. Before I messed with the car, the TPS sensor tool lit up both LED's when you adjusted it too far. When I unwrapped the harness to cut out the extra emission wiring, I accidentally cut out the TPS wiring... Got another harness and soldered everything back in, and all connections seemed good, but now after I put the harness back together, only one LED lights up, and then goes out when you push the plunger in too far. I'm assuming that I mucked up the wiring somehow, but the car starts, runs, and drives just fine below 3800rpm. Perhaps the full range of the TPS sensor circuit is messed up? __________________ Rotaries:They are NOT that complicated!

08-24-2011, 10:28 AM	#78
Max777 Pirate Join Date: Mar 2008 Location: Central IL Posts: 1,323 Rep Power: 19	So, ever since I tore apart my car to paint the engine bay last year, it never ran quite the same after reassembly. I messed around with it but it never got very far, always running into issues. This summer, I got tired of trying to make it work on the factory ECU, and had Chris Ludwig install a Haltech Sprint-RE standalone ECU, thinking that this would solve all my problems. He did a great job, and my car picked up 30ft-lbs of torque from stock on a Mustang Dyno, however we ran into an issue with the factory S4 TPS. Since it's a short range sensor, it only reads about 30% throttle input. Any more, and the ECU thinks it's being given 100% throttle. This wasn't an issue for full throttle tuning, but it did result in a lot of hesitation during part throttle cruising. The recomended fix was to install an S5 TPS and throttlebody and use the full range TPS that normally controls the OMP function. I also managed to score a godspeed front mount kit for cheap for the same person I got the TPS from, so hopefully they get here soon. Besides the engine woes, I also have been neglecting the rest of the car for some time. It really needs a paint job, so I've been saving up for that. __________________ Rotaries:They are NOT that complicated!