90mm LS2 TB working combo's
Aug 10, 2006 | 06:21 PM
#12
Originally Posted by Speartech
I guess everyone has their own definition of what they consider working or not. If you can pick up big HP numbers with tuning and have greatly reduced IAT's, and your 90mm TB is "only" opening 90%, in my book that works!
Some people think that's a serious problem. Yes you want it opening 100% and people are looking for a solution, but when you can make good gains at less than 100% opening, to me that's a GOOD problem to have!
Some people think that's a serious problem. Yes you want it opening 100% and people are looking for a solution, but when you can make good gains at less than 100% opening, to me that's a GOOD problem to have!
Bill
Aug 10, 2006 | 08:26 PM
#13
Originally Posted by Speartech
I guess everyone has their own definition of what they consider working or not. If you can pick up big HP numbers with tuning and have greatly reduced IAT's, and your 90mm TB is "only" opening 90%, in my book that works!
Some people think that's a serious problem. Yes you want it opening 100% and people are looking for a solution, but when you can make good gains at less than 100% opening, to me that's a GOOD problem to have!
Some people think that's a serious problem. Yes you want it opening 100% and people are looking for a solution, but when you can make good gains at less than 100% opening, to me that's a GOOD problem to have!
i didn't know about the 90%opening problem, guess i didn't look into it all that hard.
oh well, someone will figure it out soon enough.
Aug 10, 2006 | 10:48 PM
#14
Originally Posted by billreid1@***.net
The 90mm setup does NOT work on the 06's... PERIOD! I have a $800 paperweight now... at least until someone comes up with a solution... I plan on doing a little research myself.
Bill
Bill
Bill,
Have you looked into swapping the accelerator pedal assembly with an earlier one? Just a thought in the event the voltage output is closer to what the 90mm setup needs.
Richard
Aug 10, 2006 | 11:24 PM
#15
Originally Posted by Richard@WCCH
Bill,
Have you looked into swapping the accelerator pedal assembly with an earlier one? Just a thought in the event the voltage output is closer to what the 90mm setup needs.
Richard
Have you looked into swapping the accelerator pedal assembly with an earlier one? Just a thought in the event the voltage output is closer to what the 90mm setup needs.
Richard
Was in Massachusetts (Newburyport and Gloucester) a week ago for 2 weeks of (Semiconductor) vendor training... been out of the loop for about 3 weeks or so. My plan is to do a little research and see what it takes to get my 90 to work. I have been asked to provide the pinouts for the Speartech harness versus the 06 incoming harness to the PCM versus the LS2 TB. It may be simple... it may be impossible... I don't know. All I know is I'm going to try. It is BLATANTLY obvious something has changed...
It has been suggested to try an earlier version accel pedal. I have not tried that yet. I speculate the problem is deeper... otherwise I am certain guys smarter than me and with more time would have determined that the 06's "just need" an older accel pedal. Again, I speculate. I am about ready to hand my truck over to a trusted and reputable company (any takers?) to figure this out and I'll pay them... money is time... time is money... and I'm short on both
I am not giving up... I NEED this 90 setup for future 122 plans... and beyond.
Bill
Aug 10, 2006 | 11:40 PM
#16
Originally Posted by billreid1@***.net
Richard,
Was in Massachusetts (Newburyport and Gloucester) a week ago for 2 weeks of (Semiconductor) vendor training... been out of the loop for about 3 weeks or so. My plan is to do a little research and see what it takes to get my 90 to work. I have been asked to provide the pinouts for the Speartech harness versus the 06 incoming harness to the PCM versus the LS2 TB. It may be simple... it may be impossible... I don't know. All I know is I'm going to try. It is BLATANTLY obvious something has changed...
It has been suggested to try an earlier version accel pedal. I have not tried that yet. I speculate the problem is deeper... otherwise I am certain guys smarter than me and with more time would have determined that the 06's "just need" an older accel pedal. Again, I speculate. I am about ready to hand my truck over to a trusted and reputable company (any takers?) to figure this out and I'll pay them... money is time... time is money... and I'm short on both
I am not giving up... I NEED this 90 setup for future 122 plans... and beyond.
Bill
Was in Massachusetts (Newburyport and Gloucester) a week ago for 2 weeks of (Semiconductor) vendor training... been out of the loop for about 3 weeks or so. My plan is to do a little research and see what it takes to get my 90 to work. I have been asked to provide the pinouts for the Speartech harness versus the 06 incoming harness to the PCM versus the LS2 TB. It may be simple... it may be impossible... I don't know. All I know is I'm going to try. It is BLATANTLY obvious something has changed...
It has been suggested to try an earlier version accel pedal. I have not tried that yet. I speculate the problem is deeper... otherwise I am certain guys smarter than me and with more time would have determined that the 06's "just need" an older accel pedal. Again, I speculate. I am about ready to hand my truck over to a trusted and reputable company (any takers?) to figure this out and I'll pay them... money is time... time is money... and I'm short on both
I am not giving up... I NEED this 90 setup for future 122 plans... and beyond.
Bill
If I wasn't so wrapped up in getting ready for the swap I'd be all over this............, sorry Bill
Aug 11, 2006 | 12:24 AM
#17
Its all good bro... we take care of each other and that whats counts... I'm in no hurry. Like I said if someone wants to pick up an 06 and solve the problem and maybe cut me a deal () then we'll put this all behind us and move on to the next challenge...
Bill
) then we'll put this all behind us and move on to the next challenge...Bill
Aug 11, 2006 | 11:26 AM
#18
WOT TP is not the only problem with the commanded vs actual TP correlation issue. The 78 and 90mm TB's TP sensor outputs also differ at the closed end of the throttle plate range of motion. This means that initial idle tuning can also be troublesome. Thankfully idle learn helps manage this somewhat.
I don't know much about electronics but I spent a day playing with various combinations/configurations of resistors and was able to get the WOT and closed TP sensor outputs of the dual TP sensors to match those of the 78mm. But I think that the outputs of each of the 2 sensors have to match exactly to what the TAC or PCM is expecting throughout the entire range of motion of the TB. Otherwise it will put you into REP mode. i.e. For a given output value from TPSensor1 there is a corresponding value that must be seen from TPSensor2. On the 90mm the output from 1 sensor increases as the TB opens while the output of the other decreases.
An electronic translator that allows the output from the 90mm sensors to mimmick those of a 78mm would be nice.
I don't know much about electronics but I spent a day playing with various combinations/configurations of resistors and was able to get the WOT and closed TP sensor outputs of the dual TP sensors to match those of the 78mm. But I think that the outputs of each of the 2 sensors have to match exactly to what the TAC or PCM is expecting throughout the entire range of motion of the TB. Otherwise it will put you into REP mode. i.e. For a given output value from TPSensor1 there is a corresponding value that must be seen from TPSensor2. On the 90mm the output from 1 sensor increases as the TB opens while the output of the other decreases.
An electronic translator that allows the output from the 90mm sensors to mimmick those of a 78mm would be nice.
Aug 11, 2006 | 12:54 PM
#19
Originally Posted by DrX
I don't know much about electronics but I spent a day playing with various combinations/configurations of resistors and was able to get the WOT and closed TP sensor outputs of the dual TP sensors to match those of the 78mm. But I think that the outputs of each of the 2 sensors have to match exactly to what the TAC or PCM is expecting throughout the entire range of motion of the TB. Otherwise it will put you into REP mode. i.e. For a given output value from TPSensor1 there is a corresponding value that must be seen from TPSensor2. On the 90mm the output from 1 sensor increases as the TB opens while the output of the other decreases.
An electronic translator that allows the output from the 90mm sensors to mimmick those of a 78mm would be nice.
An electronic translator that allows the output from the 90mm sensors to mimmick those of a 78mm would be nice.
I started to mess a little with flipping the signals 180* out of phase and also using resistors of various loads and only ran into issues with the tac not enjoying the new meal
I am currently using the stock TAC with the aforementioned set-up. The challenge has been making each sensor read the EXACT value that the stock TB was delivering to the stock tac. They always seem to be off a little bit,...that is where the resistors are playing in I may get to screw with it over the weekend.
Last edited by krambo; Aug 11, 2006 at 02:13 PM.
