Question about JDM Texas program and detonation

12-25-2001, 05:52 PM

I have been noticing a good amount of pinging at tip in and WOT with the Texas program that Jim gave me at FFW. When I am going about 50mph and I give it plenty of gas but not enough to make it downshift @ about 8psi of boost it pings. It used to not ping at WOT but today I was chasing what I believe to be a fake turbo porsche and I noticed it at WOT a bit.

I know he handed out that program to a bunch of people and I was wondering if anyone else was experiencing the same problem. I never had any pinging when the weather was warmer so it must be a temperature issue.

I would just like some feedback before I talk to Jim about it.

Thanks,
Sam

12-25-2001, 08:14 PM

Sam,

I have experienced the same thing in similar situations lately. I'm thinking maybe poor quality winter gas, but I'm just cooling it for a while. Seems to do it more in colder weather.

12-25-2001, 08:29 PM

Yeah what he said....

Cold Weather - Worse gas

Doug

12-26-2001, 01:29 AM

Sam,

I suddenly started having the same problem about 3 weeks ago. I never had the problem with a 4# pulley, warm weather program and 49 degree temps. I was even pinging at 58 degrees. It was at the upper end of drive and O/D. The cold temps don't help but the gas was the main culprit.

Jim sent me 2 test programs on a flip chip so he could see how it reacted to fuel and timing. I sent my flip chip back with detail observations about both programs. He sent my flip chip back with a nice running program (no detonation)on Side I and my warm weather program on Side II. I ran a 12.65 on F1's at full weight so I definitely wanted to keep that program.

They have never jacked with the gas that bad around here but they did this year. Jim said a lot of people were having that problem this year. I hope this helps.

------------------
Later,
Chuck
Member# 497
Black 00

Chuck's Lightning Page

[This message has been edited by LTNBOLT (edited 12-26-2001).]

12-26-2001, 02:02 AM

My truck is pinging the last week too! Looks like we need yet another program the Texas winter TALON program

Oh yeah I run Chevron 93. A petroluem engineer buddy from college told me Techron is one of the few additives that acctually work. Oddly enough he works for Exxon/Mobil.

[This message has been edited by L8-APEX (edited 12-26-2001).]

12-26-2001, 10:14 AM

It should be noted that Sam didn't have any pinging till he put that cruddy Philipps 66 gas in. Unless I am wrong, which is totally possible.

------------------
2000 Lightning
#3406 of 4966
Born 5/30/2000
Best Run: 13.4@102

12-26-2001, 10:41 AM

Same problem here fellas! While lugging in overdive or while "in it" at speeds above 60-70 in detnates. I never had this problem after FFW in Ennis until two weeks ago, so it has to be a fuel problem. I run the Texaco 93 supreme. My L hates Exxon gas period!!

12-26-2001, 11:51 AM

Problems with Phillips 66 also. Texaco seems to be the best. I would think since premium is selling for less than $1.20, the refineries are really cutting octane to the thinnest possible margins.

12-26-2001, 09:43 PM

I only put 5 galons of the Phillips 66 gas in there to get me by. I use either Texaco or Mobil STRICTLY if possible. I am pinging on everything right now. I guess I should call Jim and try to get him to put a "winter" program on the other side of the chip. Thanks everyone for the feedback.

Sam

12-26-2001, 10:12 PM

I had the exact same problem when I had Sal's chip. Didn't develop until winter.

However, I have not had any detonation, in any weather, with Jim's Tom 5 program. You may want to give it a try.

12-26-2001, 10:28 PM

I believe the engines are running to lean for the cold air. the chip program isn't compsating for cooler air so chip needs to be burnt to run richer. It looks like the tuners form the north east would already have compsated for this.

12-26-2001, 10:43 PM

I will email a question down south. Gas quality must have changed. The chip program is running the same timing and A/F ratio as the summer. Fuel content is the only variable and winter gas is different just not sure how. I have been running on my stock program lately or autoX to help fight detonation. Guess a 4way chip is for the 4 seasons, LOL

12-26-2001, 10:47 PM

Apex air density is different in cooler air. the gas formalition was probally changed in oct. do your email.

12-26-2001, 11:05 PM

This is true. You actually get more "volume" weight of gas in cooler weather. So the density changes ...... haven't had problems here, but I'll re-test tomorrow.

'01 Silver L
working on 2000 miles ....

12-25-2001, 05:52 PM	#1 (permalink)
SCC2000L Guest Posts: n/a View this user's gallery iTrader: / %	Question about JDM Texas program and detonation I have been noticing a good amount of pinging at tip in and WOT with the Texas program that Jim gave me at FFW. When I am going about 50mph and I give it plenty of gas but not enough to make it downshift @ about 8psi of boost it pings. It used to not ping at WOT but today I was chasing what I believe to be a fake turbo porsche and I noticed it at WOT a bit. I know he handed out that program to a bunch of people and I was wondering if anyone else was experiencing the same problem. I never had any pinging when the weather was warmer so it must be a temperature issue. I would just like some feedback before I talk to Jim about it. Thanks, Sam

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12-25-2001, 08:14 PM	#2 (permalink)
Sixpipes Guest Posts: n/a View this user's gallery iTrader: / %	Sam, I have experienced the same thing in similar situations lately. I'm thinking maybe poor quality winter gas, but I'm just cooling it for a while. Seems to do it more in colder weather.

12-25-2001, 08:29 PM	#3 (permalink)
Silver_2000_:)! Guest Posts: n/a View this user's gallery iTrader: / %	Yeah what he said.... Cold Weather - Worse gas Doug

12-26-2001, 01:29 AM	#4 (permalink)
LTNBOLT Guest Posts: n/a View this user's gallery iTrader: / %	Sam, I suddenly started having the same problem about 3 weeks ago. I never had the problem with a 4# pulley, warm weather program and 49 degree temps. I was even pinging at 58 degrees. It was at the upper end of drive and O/D. The cold temps don't help but the gas was the main culprit. Jim sent me 2 test programs on a flip chip so he could see how it reacted to fuel and timing. I sent my flip chip back with detail observations about both programs. He sent my flip chip back with a nice running program (no detonation)on Side I and my warm weather program on Side II. I ran a 12.65 on F1's at full weight so I definitely wanted to keep that program. They have never jacked with the gas that bad around here but they did this year. Jim said a lot of people were having that problem this year. I hope this helps. ------------------ Later, Chuck Member# 497 Black 00 Chuck's Lightning Page [This message has been edited by LTNBOLT (edited 12-26-2001).]

12-26-2001, 02:02 AM	#5 (permalink)
L8-APEX Guest Posts: n/a View this user's gallery iTrader: / %	My truck is pinging the last week too! Looks like we need yet another program the Texas winter TALON program Oh yeah I run Chevron 93. A petroluem engineer buddy from college told me Techron is one of the few additives that acctually work. Oddly enough he works for Exxon/Mobil. [This message has been edited by L8-APEX (edited 12-26-2001).]

12-26-2001, 10:14 AM	#6 (permalink)
98Cobra Guest Posts: n/a View this user's gallery iTrader: / %	It should be noted that Sam didn't have any pinging till he put that cruddy Philipps 66 gas in. Unless I am wrong, which is totally possible. ------------------ 2000 Lightning #3406 of 4966 Born 5/30/2000 Best Run: 13.4@102

12-26-2001, 10:41 AM	#7 (permalink)
Skank Dog Guest Posts: n/a View this user's gallery iTrader: / %	Same problem here fellas! While lugging in overdive or while "in it" at speeds above 60-70 in detnates. I never had this problem after FFW in Ennis until two weeks ago, so it has to be a fuel problem. I run the Texaco 93 supreme. My L hates Exxon gas period!!

12-26-2001, 11:51 AM	#8 (permalink)
Sixpipes Guest Posts: n/a View this user's gallery iTrader: / %	Problems with Phillips 66 also. Texaco seems to be the best. I would think since premium is selling for less than $1.20, the refineries are really cutting octane to the thinnest possible margins.

12-26-2001, 09:43 PM	#9 (permalink)
SCC2000L Guest Posts: n/a View this user's gallery iTrader: / %	I only put 5 galons of the Phillips 66 gas in there to get me by. I use either Texaco or Mobil STRICTLY if possible. I am pinging on everything right now. I guess I should call Jim and try to get him to put a "winter" program on the other side of the chip. Thanks everyone for the feedback. Sam

12-26-2001, 10:12 PM	#10 (permalink)
Moonshine Guest Posts: n/a View this user's gallery iTrader: / %	I had the exact same problem when I had Sal's chip. Didn't develop until winter. However, I have not had any detonation, in any weather, with Jim's Tom 5 program. You may want to give it a try.

12-26-2001, 10:28 PM	#11 (permalink)
lightning2strikes Guest Posts: n/a View this user's gallery iTrader: / %	I believe the engines are running to lean for the cold air. the chip program isn't compsating for cooler air so chip needs to be burnt to run richer. It looks like the tuners form the north east would already have compsated for this.

12-26-2001, 10:43 PM	#12 (permalink)
L8-APEX Guest Posts: n/a View this user's gallery iTrader: / %	I will email a question down south. Gas quality must have changed. The chip program is running the same timing and A/F ratio as the summer. Fuel content is the only variable and winter gas is different just not sure how. I have been running on my stock program lately or autoX to help fight detonation. Guess a 4way chip is for the 4 seasons, LOL

12-26-2001, 10:47 PM	#13 (permalink)
lightning2strikes Guest Posts: n/a View this user's gallery iTrader: / %	Apex air density is different in cooler air. the gas formalition was probally changed in oct. do your email.

12-26-2001, 11:05 PM	#14 (permalink)
blue-oval01 Guest Posts: n/a View this user's gallery iTrader: / %	This is true. You actually get more "volume" weight of gas in cooler weather. So the density changes ...... haven't had problems here, but I'll re-test tomorrow. '01 Silver L working on 2000 miles ....