Author Topic: What's better? GMPP tune or Wester's Tune? (Read 26625 times)

DragonSolGXP · « **on:** August 27, 2011, 10:40:43 PM »

Ok, not sure what to think. I got the wester's tune just before he GMPP tune came out. Loved the wester's tune, but now I'm wondering. Would I be happier with the GMPP tune?

Is there a noticeable difference?

Thanks

Gentleman Jack · « **Reply #1 on:** August 28, 2011, 02:01:19 AM »

Going to be a lot of opinions on this, but the Westers tune has seemed to be more powerful overall. GMPP keeps warranty.

PS- if you haven't checked in a long time, there may be updates available for the Westers tune.

Sol Asylum · « **Reply #2 on:** August 28, 2011, 02:16:27 AM »

I also seem to recall that the GMPP tune has a pretty high number of engine failures. I could be wrong and I don't know the stats. So take that for what its worth, others will chime in I'm sure.

snaponbob · « **Reply #3 on:** August 28, 2011, 07:48:15 AM »

Without question, Westers. The GMPP tune is set at 93 octane, and say what you want - the "learn" does not seem to handle it well. Lyndon can set the tune to any octane you want as well as base altitude. If you make a change to the car (exhaust, cat, etc.) he will retune for you. Since you already have his tune, give him a call. There is NO advantage to switch to the GMPP tune.

spicy3480 · « **Reply #4 on:** August 28, 2011, 09:49:20 AM »

Westers hands down...not even a comparison. Updates are free and Lyndon is one of the best tuners around.

Brazen17 · « **Reply #5 on:** August 28, 2011, 10:15:46 AM »

Just had a new engine replaced in the wife's redline (3 out of 4 pistons trashed). She is running the GMPP tune. Don't know if it is a coincidence or not but I'm leaning towards NOT! I am also running the GMPP but plan to change over either to Wester's or Trifecta this fall on my GXP.

DragonSolGXP · « **Reply #6 on:** August 28, 2011, 11:05:22 AM »

Thank you gentlemen, you made me feel better.

Btw... I got the tune 2 years ago. I haven't changed the car since and I'm running pretty well stock. Is there anything I should contact him about? And new upgrades?

I have a 2008 Gxp

Thanks.

elff · « **Reply #7 on:** August 28, 2011, 11:27:14 AM »

Im kinda of the thought, if it aint broke, don't fix it.

Since you already have the Westers, you would go backwards in regards to power with the GMPP

I can verify the amount of knock the GMPP tune had. Dave at DDM was shocked when he saw it.
My engine is safer now that I have the 2871 Turbo and Dave's tune

Treeman · « **Reply #8 on:** August 28, 2011, 01:02:56 PM »

The only reason I am staying GMPP is that it is good enough for me and no warranty issues. Otherwise, Westers hands down. The GMPP issues that are known are mainly the solder vs crimp connectors. A lot of people have had the GMPP tune for a long time without problems.

LiquidPT · « **Reply #9 on:** August 28, 2011, 01:14:17 PM »

I just (like last weekend) had Lyndon apply his tune over my GMPP. Hell hell what a difference... I would say there is a similar leap from GMPP to Westers as I felt going stock to GMPP. The GMPP tune is rated at 290 HP and 340 lb ft at the crank. This Wester tune should be more like 300+ and 400+. I was also impressed at just how smooth the engine runs.

One improvement I know he made lately is that he figured out how to adjust the throttle response...

kennysabarese · « **Reply #10 on:** August 28, 2011, 01:38:50 PM »

keep Wester's with 2.7 sensors. That tune has the best reliability. Wester's+GMPP is not as good.

wspohn · « **Reply #11 on:** August 28, 2011, 01:57:02 PM »

Quote from: LiquidPT on August 28, 2011, 01:14:17 PM

I just (like last weekend) had Lyndon apply his tune over my GMPP. Hell hell what a difference... I would say there is a similar leap from GMPP to Westers as I felt going stock to GMPP. The GMPP tune is rated at 290 HP and 340 lb ft at the crank. This Wester tune should be more like 300+ and 400+. I was also impressed at just how smooth the engine runs.

I think that's about right. Either the Trifecta or Wester's tune should be about as much again as the GMPP.

Glad to hear you are enjoying it!

Kelu · « **Reply #12 on:** August 28, 2011, 01:59:38 PM »

Quote from: Kenny on August 28, 2011, 01:38:50 PM

keep Wester's with 2.7 sensors. That tune has the best reliability.

I can vouch for that, over 2 years and hundreds of drag races and still working strong with no issues.

tazz · « **Reply #13 on:** August 28, 2011, 05:41:29 PM »

Over on HPT thyere been some discussion on upgrading to the GMPP sensors but using the stock turbo tune instead of the GMPP tune. Seems like there is more power since there seems to be less turbo nanny controls on the stock GXP tune VS the GMPP tune. This could be positive power wise and also negative since maybe GM knows something about these cars we don't as far as reliability of the GMPP increased power out put with the GMPP tune.

kennysabarese · « **Reply #14 on:** August 28, 2011, 09:14:15 PM »

Quote from: tazz on August 28, 2011, 05:41:29 PM

Over on HPT thyere been some discussion on upgrading to the GMPP sensors but using the stock turbo tune instead of the GMPP tune. Seems like there is more power since there seems to be less turbo nanny controls on the stock GXP tune VS the GMPP tune. This could be positive power wise and also negative since maybe GM knows something about these cars we don't as far as reliability of the GMPP increased power out put with the GMPP tune.

Can you share this thread on HPT forum?

Interesting, but, you can get the same boost with the 2.7 sensors as with the 3.0 sensors, so how else could you gain?

I've been thinking of going back to stock tune, would be nice to not have to swap sensors since I now have a spare set of 3.0's

tazz · « **Reply #15 on:** August 28, 2011, 09:37:59 PM »

Yes and NO.
You can boost higher but will be out of the stock 2.7 bar sensor range which can be a mix for disaster if you do not know what your doing.
What they suggest is that you UPGRADE to the 3 bar sensors but use the STOCK GXP tune but copy and paste the sensor data 5 spaces out from the decimal from the GMPP tune to the STOCK tune and run and tune the STOCK GXP tune. You will need to copy and paste the sensor data from the GMPP tune since the car will run aweful if you don't.

kennysabarese · « **Reply #16 on:** August 28, 2011, 10:03:48 PM »

Quote from: tazz on August 28, 2011, 09:37:59 PM

Yes and NO.
You can boost higher but will be out of the stock 2.7 bar sensor range which can be a mix for disaster if you do not know what your doing.
What they suggest is that you UPGRADE to the 3 bar sensors but use the STOCK GXP tune but copy and paste the sensor data 5 spaces out from the decimal from the GMPP tune to the STOCK tune and run and tune the STOCK GXP tune. You will need to copy and paste the sensor data from the GMPP tune since the car will run aweful if you don't.

How much higher are you talking? Wester's has 2.7's running 27psi Stock turbo pretty much stops at 30psi which I've seen on my Wester's+GMPP car in the past (but I told him to slow down)

(I think we should break this 3.0 sensors discussion into another thread as the recommendation portion here has ended, and I don't want this info lost forever)

tazz · « **Reply #17 on:** August 28, 2011, 10:08:01 PM »

Yeah they were talking anything higher than 25psi.
Lyndon knows what he is doing though so 27psi on the 2.7 bar sensors I trust Lyndon but probably no one else.
As of right now I really don't want to go higher than 24psi with all the issues Ive had.

kennysabarese · « **Reply #18 on:** August 28, 2011, 10:13:13 PM »

Ok so they are recommending GMPP sensors if you want to boost over 25psi.

Well if someone can back it up with logs. I'm down to give it a try.

tazz · « **Reply #19 on:** August 28, 2011, 10:25:15 PM »

Go over to HPT and ask GMTech, I Am Broke or BackYard Turbo they could probably help you attain the logs and answers you need.
Even saw a former member from here asking for help since his other vendor tune for his larger turbo is chitty and he blew his last motor.

shabby · « **Reply #20 on:** August 28, 2011, 11:40:50 PM »

Quote from: Sol Asylum on August 28, 2011, 02:16:27 AM

I also seem to recall that the GMPP tune has a pretty high number of engine failures. I could be wrong and I don't know the stats. So take that for what its worth, others will chime in I'm sure.

There have been engine failures with all sorts of tunes even the stock one, there's more to an engine failure than just fueling and spark, part defects and abuse come to mind.

Quote from: tazz on August 28, 2011, 05:41:29 PM

Over on HPT thyere been some discussion on upgrading to the GMPP sensors but using the stock turbo tune instead of the GMPP tune. Seems like there is more power since there seems to be less turbo nanny controls on the stock GXP tune VS the GMPP tune.

That just doesn't make any sense, using incorrectly calibrated sensors gives you more power? And what nanny controls do you speak of?

tazz · « **Reply #21 on:** August 28, 2011, 11:45:34 PM »

Shabby
Your misunderstand me.
Use the 3 bar sensors and sensor data from the Solstice GXP GMPP tune but use the stock base turbo tune file from the Solstice GXP instead of the GMPP tune file then sensors and sensor data will be the same. Then you tune the stock turbo file and from what I Am Broke stated that combo seems to hold boost better than with the GMPP tune.
Pm I Am Broke

tazz · « **Reply #22 on:** August 28, 2011, 11:55:38 PM »

Yeah my 03 Supercharged F150 Ford Truck can take anything I've been able to throw at her with no problems. No way My Solstice could take the abuse I give my Ford truck but then again the whole driveline of that truck is based off the F250 and the F250 has double the TQ.

shabby · « **Reply #23 on:** August 28, 2011, 11:58:30 PM »

Hmm interesting, must of missed that thread on the hpt forum, will definitely have to try this out. Although im going to lose no lift to shift going back to the stock tune.

Gentleman Jack · « **Reply #24 on:** August 29, 2011, 12:03:43 AM »

2.7 BAR = 39.16 PSI at 0 FT Above Sea Level = 24.96 PSI of boost

3 BAR = 43.511 PSI at 0 FT Above Sea Level = 28.81 PSI of boost

GMPP tune doesn't approach 25 pounds of boost from all I've heard and read. So what's the reasoning for them changing out the sensors?

There must be another reason for them.

Second question, without using the GMPP tune, can any of the tuners even take advantage of the increase sensor range? That might very well be some of the hundreds of things that are locked out still.

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Author Topic: What's better? GMPP tune or Wester's Tune? (Read 26625 times)