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vortec bigblock Enthusiast

vortec bigblock

Posted
Posted

i just recieved my westers 93 hot tune and i have a question. Ive heard that it can take a couple tanks of gas for the pcm to take full effect. is there any truth to this? if so why is this? isnt the pcm already changed, i dont understand exactly what the deal is here. if anyone has any info let me know im very curious.

Bud Enthusiast

Bud

Posted
Posted
i just recieved my westers 93 hot tune and i have a question. Ive heard that it can take a  couple tanks of gas for the pcm to take full effect. is there any truth to this? if so why is this?  isnt the pcm already changed, i dont understand exactly what the deal is here. if anyone has any info let me know im very curious.

 

 

 

 

I just received my Wester's too. It say it will take about 200 miles to learn.

I don't ungerstand computers but I think it has to learn the way

you drive along with other stuff, why I don't know. :ughdance::ughdance:

vortec bigblock Enthusiast

vortec bigblock

Posted
  • Author
Posted
i just recieved my westers 93 hot tune and i have a question. Ive heard that it can take a  couple tanks of gas for the pcm to take full effect. is there any truth to this? if so why is this?  isnt the pcm already changed, i dont understand exactly what the deal is here. if anyone has any info let me know im very curious.

 

 

 

 

I just received my Wester's too. It say it will take about 200 miles to learn.

I don't ungerstand computers but I think it has to learn the way

you drive along with other stuff, why I don't know. :ughdance::ughdance:

 

 

 

 

i have the 8.1 with allison also- how many miles do you have on and what do you think of your new pcm

Bud Enthusiast

Bud

Posted
Posted
i just recieved my westers 93 hot tune and i have a question. Ive heard that it can take a  couple tanks of gas for the pcm to take full effect. is there any truth to this? if so why is this?  isnt the pcm already changed, i dont understand exactly what the deal is here. if anyone has any info let me know im very curious.

 

 

 

 

I just received my Wester's too. It say it will take about 200 miles to learn.

I don't ungerstand computers but I think it has to learn the way

you drive along with other stuff, why I don't know. :ughdance::ughdance:

 

 

 

 

i have the 8.1 with allison also- how many miles do you have on and what do you think of your new pcm

 

 

 

 

 

I'm afraid I can't help you very much. I received mine Friday

and have driven it very little. The weather here really sucks

now and I'm waiting for dry roads to really give it a try!

budhayes3 Senior Enthusiast

budhayes3

Posted
Posted

It could take about 150-200 miles for the PCM to learn and get used to your driving style. It looks at load signals, 02 readings, MAP readings, etc. and adjusts accordingly. After about 200 miles you should know what you have.

Bud Enthusiast

Bud

Posted
Posted
hey Bud, just wondering how you like your hot tune so far.  Ive got the same truck only 04 with some other bolt ons, and just wanted to compare opinions- thanx

 

 

 

 

I can't tell you too much. I received it last Friday and the weather

has been bad every day. I can really tell the difference just normal

driving though. Soon as it dries up a little I can tell you more. I've

only driven about 25 miles!!

BLACK-WIDOW New Member

BLACK-WIDOW

Posted
Posted

I just received my Westers 89/93 dual tune about a week and a half ago. I have put a tank and a half through it and I will share my experiences with you.

 

When I 1st installed it, the only thing I noticed was the transmission functions. (Shift points/firmness/downshifts/throttle responsiveness) I was thrilled with the results on that end, but after about 250 miles on a weekend trip the following day, I didn't notice any improvement in performance. I was running 92 octane fuel from the moment I installed it. It was about exactly a week and one+ tank full of fuel that I noticed a very slight improvement in performance. It was noticeable definitely, but nothing worth writing home about. I called Lyndon and he reviewed my file. He asked about local elevation here. (1250) He said he has been receiving many complaints from people in the U.S. about pinging. He said as soon as he gets my core he'd send me a "hotter" update. He said that it is easier to make it hotter than to explain why it's pinging so bad.

 

Long and short. Put some miles on it and drive it somewhat hard. I would drive around town and make it downshift around every corner. Accelerate hard at lights and freeway entrances.

lrymal Senior Enthusiast

lrymal

Posted
Posted
....

Long and short.  Put some miles on it and drive it somewhat hard.  I would drive around town and make it downshift around every corner.  Accelerate hard at lights and freeway entrances.

 

 

 

When I purchased mine, the going phrase of advice was, "Drive it like you stole it---for the first 100 miles."

 

I have really enjoyed mine. I mean, this isn't one of those upgrades that will possibly pay for itself. I just don't see that. But, it certainly fulfills the "golly-gee" part of the truck.

Chris97K1500 Enthusiast

Chris97K1500

Posted
Posted

I had a little bit of pinging after a few hundred miles. Went with a HyperTech 180* T-stat, never pinged again. I recently had Lyndon upgrade my PCM for this and tranny work, never pinged again after "retune". Easiest way to check to see if your PCM is improving performance, take out the "tuned" PCM and put back in the stock one. Mine felt like I was towing a tractor trailer. No low/mid power at all and would not downshift when I'd get on it. Needless to say I was glad to get my Wester's back. Chris

Bud Enthusiast

Bud

Posted
Posted
I had a little bit of pinging after a few hundred miles.  Went with a HyperTech 180* T-stat, never pinged again.  I recently had Lyndon upgrade my PCM for this and tranny work, never pinged again after "retune".  Easiest way to check to see if your PCM is improving performance, take out the "tuned" PCM and put back in the stock one.  Mine felt like I was towing a tractor trailer.  No low/mid power at all and would not downshift when I'd get on it.  Needless to say I was glad to get my Wester's back.  Chris

 

 

 

 

When I first put my Wester's 93 in the trans

shifted really firm. Now a few days later the trans seems a

little slow. Is this part of the learning? :chevy:

vhato Enthusiast

vhato

Posted
Posted
...Easiest way to check to see if your PCM is improving performance, take out the "tuned" PCM and put back in the stock one.  Mine felt like I was towing a tractor trailer.  No low/mid power at all and would not downshift when I'd get on it.  Needless to say I was glad to get my Wester's back.  Chris

 

 

 

 

I agree with Chris97,

 

I have never had a custom PCM, but my old truck had the HyperTech and I honestly felt no difference at all. So I left the HyperTech code in the PCM for a few months. Truck needed to see the dealer so I removed the HyperTech and Ohh my gawd.......She felt like I swapped the 5.3 for the 4.8...If I had a custom tune I am sure it would have felt like I swapped in a 4.3. Just my opinion.

Butch 02 Denali Enthusiast

Butch 02 Denali

Posted
Posted
I had a little bit of pinging after a few hundred miles.  Went with a HyperTech 180* T-stat, never pinged again.  I recently had Lyndon upgrade my PCM for this and tranny work, never pinged again after "retune".  Easiest way to check to see if your PCM is improving performance, take out the "tuned" PCM and put back in the stock one.  Mine felt like I was towing a tractor trailer.  No low/mid power at all and would not downshift when I'd get on it.  Needless to say I was glad to get my Wester's back.  Chris

 

 

 

 

When I first put my Wester's 93 in the trans

shifted really firm. Now a few days later the trans seems a

little slow. Is this part of the learning? :chevy:

 

 

 

 

 

Bud, the tranny has an "adaptive learn" feature. If you drive easy, the tranny tones down the shift pressure, if you drive hard, the tranny turns up the pressure. It's a learning thing, I find if I boot it hard at least a couple of times a day it will stay in the firm shift mode. This is in GM programming and has nothing to do with the tuning. That is why shift kits can sometimes cause problems. The shift kit adds pressure, the PCM sees it as something wrong and turns the pressure down. What you end up with is good firm shifts from the shift kit (the bands), but too little line pressure holding the clutches between the shifts because the "Adaptive learn" turned the pressure down.

o4yukonxl Enthusiast

o4yukonxl

Posted
Posted

Check out my post in high performance regarding the dyno results of the Westers Hot Tune. I had two PCMs and the stock one and dynoed all three. You need to drive it really hard for the first hundred miles or so. Also, Lyndon does use less advance initially due to complaints about pinging. I live at 5280 and he has really juiced mine. However, when I got down to sea level in Canada, it didn't ping, just ran really strong. Also, make sure you got the throttle fix. GM controls the throttle opening on 2004-2005 models and Lyndon can override it.

budhayes3 Senior Enthusiast

budhayes3

Posted
Posted

I agree with what Butch said about the adaptave learning, and the shift kit. Most manufacturers PCM's have adaptive learining...one of our Toyota customer thought that his vehicle was losing power, and we couldn't find anything wrong with it. I beat the piss out of the thing trying to duplicate his concern and had to deliver the car back to him as it was. He called us back from his cell phone and said "I don't know what you did but the power's back!" A couple of months later the same thing happened...long story short (too late), we found out that on both occassions his wife had used his car for a week and every time he got it back from her...well I guess you know where this is going. The PCM adapted to her softer driving style.

 

I agree about the shift kit issues too, I originally was going to do the Transgo deal, and after a little research decided that for a daily driver increasing trans performance electronically was the way to go. I still have a Corvette servo that I didn't install and some aluminum accumulator pistons that I'm gonna hang on to if my plastic ones ever give me problems.

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