Problem on the dyno
Thread Starter
Instructor
Joined: Jul 2014
Posts: 131
Likes: 17
Problem on the dyno
Has anybody had to pull fuses in order to get an accurate dyno reading on a mustang dyno?
Last week I went in for a baseline and put down 415hp and 430tq. After that I installed ARH 1 7/8" without cats and brought it back tonight. Ironically, same numbers. Then the tuner corrected the A/F and on it went for another pull of, u guessed it, 415hp and 430tq. Last, he started advancing the timing a little and low and behold, the same 415hp and 430tq again! (numbers weren't exactly the same to the decimal on each pull but within 1%).
Just to make sure it wasn't the dyno, he loaded up a built GT500 and it put down some 680hp and 730tq.
We did have a problem with all the codes (service stabilitrak, service ABS, service parking brake etc.) popping up due to the rear wheels moving while the fronts were not. Does this need to be disabled somehow in order to get an accurate number?
Last week I went in for a baseline and put down 415hp and 430tq. After that I installed ARH 1 7/8" without cats and brought it back tonight. Ironically, same numbers. Then the tuner corrected the A/F and on it went for another pull of, u guessed it, 415hp and 430tq. Last, he started advancing the timing a little and low and behold, the same 415hp and 430tq again! (numbers weren't exactly the same to the decimal on each pull but within 1%).
Just to make sure it wasn't the dyno, he loaded up a built GT500 and it put down some 680hp and 730tq.
We did have a problem with all the codes (service stabilitrak, service ABS, service parking brake etc.) popping up due to the rear wheels moving while the fronts were not. Does this need to be disabled somehow in order to get an accurate number?
Race Director
Joined: Jul 2007
Posts: 10,959
Likes: 2,641
From: Texas Hill Country
Has anybody had to pull fuses in order to get an accurate dyno reading on a mustang dyno?
Last week I went in for a baseline and put down 415hp and 430tq. After that I installed ARH 1 7/8" without cats and brought it back tonight. Ironically, same numbers. Then the tuner corrected the A/F and on it went for another pull of, u guessed it, 415hp and 430tq. Last, he started advancing the timing a little and low and behold, the same 415hp and 430tq again! (numbers weren't exactly the same to the decimal on each pull but within 1%).
Just to make sure it wasn't the dyno, he loaded up a built GT500 and it put down some 680hp and 730tq.
We did have a problem with all the codes (service stabilitrak, service ABS, service parking brake etc.) popping up due to the rear wheels moving while the fronts were not. Does this need to be disabled somehow in order to get an accurate number?
Last week I went in for a baseline and put down 415hp and 430tq. After that I installed ARH 1 7/8" without cats and brought it back tonight. Ironically, same numbers. Then the tuner corrected the A/F and on it went for another pull of, u guessed it, 415hp and 430tq. Last, he started advancing the timing a little and low and behold, the same 415hp and 430tq again! (numbers weren't exactly the same to the decimal on each pull but within 1%).
Just to make sure it wasn't the dyno, he loaded up a built GT500 and it put down some 680hp and 730tq.
We did have a problem with all the codes (service stabilitrak, service ABS, service parking brake etc.) popping up due to the rear wheels moving while the fronts were not. Does this need to be disabled somehow in order to get an accurate number?
sounds like your tuner is new to the E92 and needs to learn what to do with the torque based driver demand system. the ECM is closing the throttle to keep power where it is programmed. he has to change that logic in addition to the af and timing etc among other things.
Former Vendor
Joined: Oct 2006
Posts: 2,050
Likes: 33
From: Cumming Georgia
this was an issue when the car first came out. the tuning community figured it out in 2013.
sounds like your tuner is new to the E92 and needs to learn what to do with the torque based driver demand system. the ECM is closing the throttle to keep power where it is programmed. he has to change that logic in addition to the af and timing etc among other things.
sounds like your tuner is new to the E92 and needs to learn what to do with the torque based driver demand system. the ECM is closing the throttle to keep power where it is programmed. he has to change that logic in addition to the af and timing etc among other things.
Burning Brakes
Joined: Apr 2003
Posts: 908
Likes: 2
From: TROY MI
this was an issue when the car first came out. the tuning community figured it out in 2013.
sounds like your tuner is new to the E92 and needs to learn what to do with the torque based driver demand system. the ECM is closing the throttle to keep power where it is programmed. he has to change that logic in addition to the af and timing etc among other things.
sounds like your tuner is new to the E92 and needs to learn what to do with the torque based driver demand system. the ECM is closing the throttle to keep power where it is programmed. he has to change that logic in addition to the af and timing etc among other things.
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Thread Starter
Instructor
Joined: Jul 2014
Posts: 131
Likes: 17
this was an issue when the car first came out. the tuning community figured it out in 2013.
sounds like your tuner is new to the E92 and needs to learn what to do with the torque based driver demand system. the ECM is closing the throttle to keep power where it is programmed. he has to change that logic in addition to the af and timing etc among other things.
sounds like your tuner is new to the E92 and needs to learn what to do with the torque based driver demand system. the ECM is closing the throttle to keep power where it is programmed. he has to change that logic in addition to the af and timing etc among other things.
DOUG@ECS, he told me that he will be back at the shop on Monday and can send me/you/Chris the data log if you want to look at them. I would like to get this resolved before I install the SC/Meth kit. I have no baseline otherwise.
Thanks again.
Race Director
Joined: Jul 2007
Posts: 10,959
Likes: 2,641
From: Texas Hill Country
Besides, all headers, even the ones that "don't require a tune," need a tune.
Many people don't understand that a tune is not "just another mod" like an intake or exhaust or cam or really anything else. A tune tells the entire powertrain how to interpret the signals it receives from the sensors that measure airflow, oxygen content, air pressure, temperature, wheel speed, potential preignition, camshaft and crankshaft position, gear selection, etc.
A tune ties it all together. You want headers. You want a cam. You NEED a tune. A tune is the only mod that makes another mod work right. You don't need an intake to make your headers work right. You don't need a supercharger to make your cam work right. A tune makes everything work right. And yes, it can even make your stock configuration live up to their full potential.
Can you install parts without a tune? Yes of course.....but as Chris Rock once said, "You can drive with your feet if you want to, but that don't make it a good f*kn idea!"
Race Director
Joined: Jul 2007
Posts: 10,959
Likes: 2,641
From: Texas Hill Country
I just spoke with the tuner. He said he was aware of this and that it wasn't the problem. The driver demand was increased and stayed fully open at 84% throughout each pull.
DOUG@ECS, he told me that he will be back at the shop on Monday and can send me/you/Chris the data log if you want to look at them. I would like to get this resolved before I install the SC/Meth kit. I have no baseline otherwise.
Thanks again.
DOUG@ECS, he told me that he will be back at the shop on Monday and can send me/you/Chris the data log if you want to look at them. I would like to get this resolved before I install the SC/Meth kit. I have no baseline otherwise.
Thanks again.
Premium Supporting Vendor
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From: Providing the most proven supercharger kits for your C5/6/7 609-752-0321
Thread Starter
Instructor
Joined: Jul 2014
Posts: 131
Likes: 17
I can't seem to get much luck here with tuners in the Chicago market. I have spent $800 and have gone backwards. Please help.
Race Director
Joined: Jul 2007
Posts: 10,959
Likes: 2,641
From: Texas Hill Country
Drifting
Joined: Jul 2013
Posts: 1,726
Likes: 770
This is my concern with my local tuner.
He did some dyno tuning for the pfadt supercharger system for pfadt early this year. He tuned 1 other C7 but that's it. I'm concerned he's not as familiar with the new ECU as he needs to be and I will get issues with a supercharger.
He dyno tuned my mustang and it ran really well, however this is not in the same league as far as tuning goes. He does fantastic work and has a very strong reputation with the car scene here. But, that doesn't mean he knows the new ECU like LMR, Vengeance, AA, ECS, ETMC, etc. etc. I wish any one of you guys were within driving distance of me.
He did some dyno tuning for the pfadt supercharger system for pfadt early this year. He tuned 1 other C7 but that's it. I'm concerned he's not as familiar with the new ECU as he needs to be and I will get issues with a supercharger.
He dyno tuned my mustang and it ran really well, however this is not in the same league as far as tuning goes. He does fantastic work and has a very strong reputation with the car scene here. But, that doesn't mean he knows the new ECU like LMR, Vengeance, AA, ECS, ETMC, etc. etc. I wish any one of you guys were within driving distance of me.
Last edited by C7pimp; Jul 31, 2014 at 10:00 AM.