NASSM 2009 GM Roadster Tuning Specials!

[GM Roadster Club]

GM Roadster will be offering performance ECM Tuning at the North American Solstice SKY Meet in Denver June 18th - 21st.

We are offering special tuning at discounted rates for the NASSM Event only!

2.4L ECM Tuning $200

2.0L Turbo ECM Tuning $250

Why Buy an extra ECM for hundreds of $$$ We are offering our V-Tuner Update service for only $50 extra for the NASSM Event ($100 Regular cost)! Our V-tuner Update service allows us to store your Stock tune and your performance tune on our secure server and if you ever need to go back to stock or add bolt on's later on and need your performance tune altered we simply send you our V-Tuner in the mail as we make the changes in right in the comfort of your home! No need to swap ECM's or have unnecessary down time.

Please reserve your Tune before the Event so we can make your appointment. Click Here

See you all in June!

Martin-GMR

[GXPinKC]

Thanks Martin for the great Tune at the Denver Nationals! When Carol and I did the Peak to Peak at the Nationals in Denver after getting the Tune and V-Tuner Update the day before. I can tell you that it was AWSOME!!!!!!!!!!!!!

We had 98 Kappa's on the Peak to Peak and I drove "Miss Red Eagle" in the number 2 position right behind Aspenrose. Anyway, I was blown away with the Tune. Thanks so much for helping me with my spur of the moment decision to get the tune. After the Meet Carol and I drove to Boulder, Colorado to spend several days with my nephew and his wife and family. Well, my nephew drove "Miss Red Eagle" and he was most impressed!

Thanks for the great Tune. I must help my wife unpack from the trip.

GXPinKC
Ron

[GM Roadster Club]

Originally Posted by GXPinKC Thanks Martin for the great Tune at the Denver Nationals! When Carol and I did the Peak to Peak at the Nationals in Denver after getting the Tune and V-Tuner Update the day before. I can tell you that it was AWSOME!!!!!!!!!!!!! We had 98 Kappa's on the Peak to Peak and I drove "Miss Red Eagle" in the number 2 position right behind Aspenrose. Anyway, I was blown away with the Tune. Thanks so much for helping me with my spur of the moment decision to get the tune. After the Meet Carol and I drove to Boulder, Colorado to spend several days with my nephew and his wife and family. Well, my nephew drove "Miss Red Eagle" and he was most impressed! Thanks for the great Tune. I must help my wife unpack from the trip. GXPinKC Ron

Ron,

First off, it was an absolute pleasure to meet you and your lovely wife Carol! One of the things I really enjoy doing is getting out there and meeting everyone...

I was glad you gave me the opportunity to tune your '07 GXP, as we had discussed you have a very early production number and after I pulled your stock tune and looked at it you did indeed have a bad set of tables from the factory. I made the needed changes as well as putting our tune on your car which gave you about a 55-60 HP Bump in power since you were starting from a lower number...

Like I said We have known about the bad tables in the '07 GXP since we originally did the R&D work for our tune last July but we did not want toi make a post and cause panic. But there is another thread going on right now where an owner of an '07 GXP like yours is having issues so it looks like this info is going to come out very soon.


Again thank you for the opportunity to tune your awesome GXP and I look forward to seeing you and Carol at another event very soon!

Thanks,

Martin

[rob the elder]

Martin,
I had a similar experience. My GXPs born on date is 4/07.

The car was parked for a couple of days getting various things done by Joe and DDM guys so I forgot about the GMR tune when I got into it on Saturday to move it. When I first stepped on the gas I thought something was wrong! It wanted to leap forward instead of its normal surge. I frankly was having some trouble till I adjusted to the fact that it took a whole lot less throttle to get started. Then after a couple of minutes of running around the local streets doing wheel spins all was good! Very good!

The GMR tune gave me a TON more low end and very noticable high end even after the GMPP tune which I have been running for several months. I was not anticipating such a big increase in torque and HP. Good job.

Ryck is not a happy man and Van is frankly looking for some lead weights to hide in my car now.

[GM Roadster Club]

Originally Posted by rob the elder Martin, I had a similar experience. My GXPs born on date is 4/07. The car was parked for a couple of days getting various things done by Joe and DDM guys so I forgot about the GMR tune when I got into it on Saturday to move it. When I first stepped on the gas I thought something was wrong! It wanted to leap forward instead of its normal surge. I frankly was having some trouble till I adjusted to the fact that it took a whole lot less throttle to get started. Then after a couple of minutes of running around the local streets doing wheel spins all was good! Very good! The GMR tune gave me a TON more low end and very noticable high end even after the GMPP tune which I have been running for several months. I was not anticipating such a big increase in torque and HP. Good job. Ryck is not a happy man and Van is frankly looking for some lead weights to hide in my car now.

Rob,

I'm happy you like the improved performance... As you mentioned you had the GMPP tune already and our tune clearly add's a noticeable gain over it. we have re-tuned a few of the GMPP tunes with great success!

Drive safe and have fun

Martin

[Flash's Owner]

Originally Posted by GM Roadster Club Ron, First off, it was an absolute pleasure to meet you and your lovely wife Carol! One of the things I really enjoy doing is getting out there and meeting everyone... I was glad you gave me the opportunity to tune your '07 GXP, as we had discussed you have a very early production number and after I pulled your stock tune and looked at it you did indeed have a bad set of tables from the factory. I made the needed changes as well as putting our tune on your car which gave you about a 55-60 HP Bump in power since you were starting from a lower number... Like I said We have known about the bad tables in the '07 GXP since we originally did the R&D work for our tune last July but we did not want toi make a post and cause panic. But there is another thread going on right now where an owner of an '07 GXP like yours is having issues so it looks like this info is going to come out very soon. Again thank you for the opportunity to tune your awesome GXP and I look forward to seeing you and Carol at another event very soon! Thanks, Martin

Martin,

I talked with some of the powertrain guys this morning. There are no major changes to any of the basic engine operation software from 2007 model year through 2009. I am trying to get back to the calibrator/calibrators that did the majority of work on the LNF to get more specifics.

Every year and even in between years, there are tweaks and changes that happen, and the LNF is no exception. Changes to the outputs for functionality of the DIC, fixes to customer annoyances and driveability improvements, and we also had the change from vacuum pump to Optimized Hydraulic Braking and back again from 07 to 08 to 09, all of which require significant changes to the ECU program, but have no effect on overall torque or power. In addition, there was a new "box" for 08, essentially a hardware change, with a different operating frequency. This requires a different "table" per se, to work with the change in hardware/operating system, but the end power and torque curve is exactly the same.

Other than dyno runs, which have their own set of problems, how have you determined that the 07 cars are underperforming, exactly do you think are the "bad" calibration tables for 07 model year cars, and how much less power/torque does this hypothetically cost the 07 cars?

It looks like you are implying that the 07 LNF cars are only making 230 hp crank. Having driven many 07, 08, and 09 cars, I can tell you that I have not seen any cars that underperform without a clear reason why. For example, one car we gave to a magazine for evaluation got a pathetic 0-60 time (about 6 seconds) and a poor 1/4 mile (over 14.5 seconds), but come to find out they put 87 octane fuel in the car and ran it on a 89ºF day. Talk about instant spark retard.

We got the car back, and with the magazine, ran the fuel out, cleared the ECU, and refueled with premium. Like magic, it came right back to 5.4 seconds/13.9 seconds.

I have had people who claim their car is not making full power, and like the engineer I am, I always look for the reason for such a claim. If there is an issue, I really want to know about it and understand it fully, and sometimes the customers are the best barometer for determining that there is one in the first place.

After talking to many over the years, I find out they come to this conclusion because of a dyno run. Many of these people have never even hooked up a Vbox or gone to a drag strip, they just base it on that dyno pull, or worse yet tell me about their feelings from their "butt dyno". Dynamometers all have an "adjustment", which SAE has done their best to standardize. It works very well for N/A and Supercharged vehicles, but not so well for modern turbocharged engines.

So, if you know which tables are "in error", this will help me get closer to the answer of differences, if any, between 07 and 08+ LNF calibrations.

Steve.

[Simkow]

I had a post over at the skyroadster forums about my GMPP tune issues (GMPP Tune - Saturn Sky Forums: Saturn Sky Forum). Not really sure if this is just my butt dyno but I find the 0-60 times and the fact the my boost didn't really increase after getting the tune a little strange.

I am open to getting a further tune if it would help, but I am very nervous about the warranty. The "Vtuner" comments mention that I would be able to put my original GMPP tune back at any time. Would the dealer still know I reflashed my ecu if I put it back to normal?

[Flash's Owner]

Originally Posted by Simkow I had a post over at the skyroadster forums about my GMPP tune issues (GMPP Tune - Saturn Sky Forums: Saturn Sky Forum). Not really sure if this is just my butt dyno but I find the 0-60 times and the fact the my boost didn't really increase after getting the tune a little strange. I am open to getting a further tune if it would help, but I am very nervous about the warranty. The "Vtuner" comments mention that I would be able to put my original GMPP tune back at any time. Would the dealer still know I reflashed my ecu if I put it back to normal?

I did find out that if the dealer does not do a battery disconnect, and your engine had learned down previous to the install, the install of the GMPP does not affect the learn tables. This is probably the reason that so many of our cars seem to take time to "learn" the GMPP tune.

Unknown about reflashing ecu and dealer detectability.

[GM Roadster Club]

Originally Posted by Flash's Owner Martin, I talked with some of the powertrain guys this morning. There are no major changes to any of the basic engine operation software from 2007 model year through 2009. I am trying to get back to the calibrator/calibrators that did the majority of work on the LNF to get more specifics. Every year and even in between years, there are tweaks and changes that happen, and the LNF is no exception. Changes to the outputs for functionality of the DIC, fixes to customer annoyances and driveability improvements, and we also had the change from vacuum pump to Optimized Hydraulic Braking and back again from 07 to 08 to 09, all of which require significant changes to the ECU program, but have no effect on overall torque or power. In addition, there was a new "box" for 08, essentially a hardware change, with a different operating frequency. This requires a different "table" per se, to work with the change in hardware/operating system, but the end power and torque curve is exactly the same. Other than dyno runs, which have their own set of problems, how have you determined that the 07 cars are underperforming, exactly do you think are the "bad" calibration tables for 07 model year cars, and how much less power/torque does this hypothetically cost the 07 cars? It looks like you are implying that the 07 LNF cars are only making 230 hp crank. Having driven many 07, 08, and 09 cars, I can tell you that I have not seen any cars that underperform without a clear reason why. For example, one car we gave to a magazine for evaluation got a pathetic 0-60 time (about 6 seconds) and a poor 1/4 mile (over 14.5 seconds), but come to find out they put 87 octane fuel in the car and ran it on a 89ºF day. Talk about instant spark retard. We got the car back, and with the magazine, ran the fuel out, cleared the ECU, and refueled with premium. Like magic, it came right back to 5.4 seconds/13.9 seconds. I have had people who claim their car is not making full power, and like the engineer I am, I always look for the reason for such a claim. If there is an issue, I really want to know about it and understand it fully, and sometimes the customers are the best barometer for determining that there is one in the first place. After talking to many over the years, I find out they come to this conclusion because of a dyno run. Many of these people have never even hooked up a Vbox or gone to a drag strip, they just base it on that dyno pull, or worse yet tell me about their feelings from their "butt dyno". Dynamometers all have an "adjustment", which SAE has done their best to standardize. It works very well for N/A and Supercharged vehicles, but not so well for modern turbocharged engines. So, if you know which tables are "in error", this will help me get closer to the answer of differences, if any, between 07 and 08+ LNF calibrations. Steve.

HI Steve,

It was great seeing you this weekend, I remember when we first met back in December of 2005 when you came to our first get together here in Arizona!

I'll have Steve Kenniff put together a list of Data and send it your way....

Thank you,

Martin