Topic: Wester's GMPP tune

[lil goat]

Last Wednesday night I installed the Wester's GMPP tune on Nolanb's 2007 GXP. He had some minor issue's (it blew the hoses off the solenoid that controls the wastegate) not sure why this happened, Bryan fixed it with new hose clamps. He had a dialog back and forth with Lyndon and this morning I installed an update and asked a few questions about the tune. I will let Bryan expand on the comments, but he told me it was a lot better than the stock GMPP, spools up much faster is quieter and smoother. We will see dyno results this weekend. Bottom line if you have a GMPP tune and want a Wester's upgrade contact Lyndon. I am sure he is still tweaking it but there is a tune available.

[tazz]

Any idea how long before all the bugs are out for the GMPP Wester's tune?

[lil goat]

Bryan goes on the dyno with me this weekend to get some test data, not sure there will be any changes but after the update yesterday morning feedback from Bryan was very positive. Every car is a little different, that's why HP Tuners is such a great tool, the tune can be installed and then Lyndon can easily make adjustments as needed. It is pretty much ready now, as updates are free how can you lose? Lyndon is always working to improve his products, so updates come about, some minor some major.

[perris]

so, is it worth it getting the gm update before the tune or go straight to tune without update

[DeepBlueGXP]

It depends if you bought the GMPP upgrade or you bought the sensors separate.

[lil goat]

Like Joe says. To me the first thing to buy is HP Tuners or have someone handy who has it. The order you buy them doesn't matter to much, either way you end up at the same place. Like they say there is more than one way to get to Pittsburgh. Personally I would get the Wester's first, you may decide you don't need the GMPP. I am at the point I wonder if I need my car to be any faster, put the GMPP money toward new brakes or tires you will need them. We will see a heads up run on Saturday Wester's GMPP vs. the SS tune, Bryan has the same exhaust I do, he has the Hahn intercooler I have the Dejon, and he has a stock cat, I have none. Pretty close to the same so we should be able to get a decent comparison, both cars are also 2007's and yellow. Jonymac has a 2007 Sky with the RPI intercooler and exhaust other than that same tune as mine and no cat. We will get some really interesting results, wish we had a car with the new SS tune and a CAT. We will also get numbers on a DDM Stage III or IV I don't remember S/C, so we can see how that compares to the GXP.

[kennysabarese]

I am at the point I wonder if I need my car to be any faster

Never thought I'd hear you say that!

[nolanb]

Sorry everyone that it has taken me so long to get this posted.  Sometimes life and work just seem to get in the way to the things that are the most important like getting my results posted.


As lil goat has already stated he did me a great favor and help me with the install of a new race tune from Lyndon with updates for the GMPP.  The reason I decided to get the GMPP was 2 fold.  First, I figure that getting something like the GMPP is going to become harder and harder as time goes by.  Second, I discussed my decision with Lyndon and in the long run he suggested I would be better off with the GMPP + Wester's Race tune.

Before I get into how great I think the Wester’s tune is I want to say that the GMPP on its own is an incredible improvement over Stock.  But the Wester's both from before I had the GMPP and after the GMPP is quicker and more responsive than the GMPP on it's own.

Wester’s New Tune for the GMPP is amazing.  The Turbo pressures scroll up fast and peg the meter.  The engine sound is quieter and smoother than before.  Power is quick and solid.  The differences between the GMPP and GMPP with Wester's are quickly noticeable.  There is more power and the power is available quicker in every gear.  I know, I know, this is all just seat of the pants information and for the most part only as good as my word that it is true.  The true proof will come once we put the car on the dyno and I can post some un-bias evidence via the dyno reports.  For that information you will have to wait until we finish the dyno runs this Saturday.


A side note about my GMPP / Wester's tune experience.  I drove with just the GMPP installed for a couple of weeks before lil goat and I were able to meet up and install the latest tune from Lyndon.  Once the Wester's tune was installed during my first trip the 2 of the pressure hoses on the control solenoid for the waste gate blew off. 

As a warning to others, At first I didn’t even know that this had happened.  I was getting incredible pressures all the time and thought this was the greatest thing.  But then I noticed that when I kept my foot in it at Max Pressure I would hear the most horrible clang of metal on metal.  It sounded like someone was under the hood swinging a wrench around and when idling the engine was running rough and too fast.

What was happening was the waste gate was being forced open by the pressures created by the turbo and it was being slammed into the Turbo Cover.  After some investigation and many emails to Lyndon (Since I never thought what happened could possible have happened) I resolved this problem by installing replacement clamps and everything smoothed out.

[SeLFMaDE]

So will there be a GMPP only run and then a GMPP + Wester's run during your dyno session for comparison?

[Imaj]

Well goat...I am eagerly waiting to hear the results from the dyno pulls. I am hoping you are around 285 whp and 360 torque. That would be sweet! Although I have the solo high flow cat...there can't be that much difference in tunes. Good luck!

[spicy3480]

Can you show a picture of which hoses blew off with the GMPP + Westers tune?  Also, can you note the replacement clamps that you bought.  I am thinking of going with the GMPP sensors, but I already have the Westers updated "SS" tune (as lil goat would say) and am very happy with it.  I want to know if the difference is noticeable.

[lil goat]

Well goat...I am eagerly waiting to hear the results from the dyno pulls. I am hoping you are around 285 whp and 360 torque. That would be sweet! Although I have the solo high flow cat...there can't be that much difference in tunes. Good luck!

I had a 287 and 313 over a year ago running 18-19 PSI that was the original Race tune, there have been 2 major updates since, I am hitting and holding 22 now should be a nice bump.

The hoses are the ones around the solenoid remember way back when when we bypassed the solenoid to get the turbo to spool up faster, they are little 1/4 " vacuum lines, not big hoses. He just used some standard little hose clamps.

[rich71]

do all the hoses that connect to the solenoid need clamps??.......how about where the hoses connect on the other end, to whatever they connect to??? how many hoses connect to it? I think its 3 so maybe 6 clamps, one on each end of the hose would be the safest bet????

[rich71]

i looked at the EDAL mod on the BB as it has pictures. Looking at them, i think it is the short hose from the unit to the manifold and the other pressure one goes to the cold side charge pipe. the third one goes to the turbo, not sure if that would be vacum or boost pressure inside that hose....

[Imaj]

I had a 287 and 313 over a year ago running 18-19 PSI that was the original Race tune, there have been 2 major updates since, I am hitting and holding 22 now should be a nice bump.

The hoses are the ones around the solenoid remember way back when when we bypassed the solenoid to get the turbo to spool up faster, they are little 1/4 " vacuum lines, not big hoses. He just used some standard little hose clamps.

What!!!! Are you talking BHP? Because, I have only heard of one person hitting 285 whp with a Wester's tune. If you are hitting those numbers as WHP...give it up...What are you doing to get it?

[chuckdoc]

Both lil goat and dbg have done that and more.  Only thing
that really counts is 1/4 times.  Waiting for someone to post
a 12 something.  Joe is close

[Kelu]

On 4th-6th of September I will race to King of Europe and I will have drag slips. i will be glad to share the results.
Last time when I was to drag strip I had 13.5 with only the race tune. My guess is a low 13 if not better.

[Uranium-238]

I'm betting you might break into the 12's if the track is grippy enough. Good luck!

[lil goat]

You will never ever see me post BHP, that is for poseur's. That was on a dyno with 9% compensation, to make it correlate with a DynoJet, should have been 12% to make it equal that would have been about 293. Joe is at 285 has been there for a long time. We have not been on the dyno in some time. It's the tune, all I have is a Solo Mach exhaust and a Dejon intercooler, Joe still has stock intercooler, I think his is the Solo Mach as well. The toaster tune has even better numbers 

[LatinVenom]

With 285 at wheels and a weight of 3145 (2895+250)
The quarter mile acceleration time of a car that weighs 3145 pounds and has 285 horsepower is 12.968 seconds.

The speed is 105.110605087433 mph.

[lil goat]

You forgot wind resistance, our cars have the same as a very large brick. Real world Joe does consistent 13.5's

[Kelu]

Uranium-238 and LatinVenom you are right guys but I prefer to aim something which is more practically achievable and if I'm doing better to be a bonus. Many things can influence a "record braking" like temperature, track surface, wind, tires and some others that's why I state low 13 rather than a high 12.

[kennysabarese]

So I always thought that using crank horsepower would be a great way to compare cars that are run on different dynos. Since we have torque management, I assume the rated crank horsepower is pretty close to 260hp on every car.

If you dyno stock, then do mods, then run on the same dyno, you will get an increase of a certain percentage. Then you just add that percentage to the stock 260.

No need to try to calculate drivetrain loss or care about different dynos.

Is there any merit to this simple math that I assume will work?

[tazz]

Does the Torque learn down feature limit Hp also or just Tq I thought it just limited Tq.

[rich71]

stock tune it will pulled down any mod's gains, back to stock 260hp 260trq. I have no direct experience as i got a tune before i did any mods because of this.