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Discussion Starter · #1 ·
Tomorrow the yellow beast gets its GMPP tune kit, from a GM dealer. I hope I like the results, since my GXP is running perfectly. Does "If it ain't broke, don't fix it" apply in this situation? I hope not.
 

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Tomorrow the yellow beast gets its GMPP tune kit, from a GM dealer. I hope I like the results, since my GXP is running perfectly. Does "If it ain't broke, don't fix it" apply in this situation? I hope not.
I have it and love it on my Mean GXP. No problems.:thumbs:
 

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Just MAKE SURE THEY SOLDER THE CONNECTIONS to the MAP sensors!

Do NOT accept crimps, they WILL fail.
:agree::agree: I had them solder mine.
 

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They came out with that after I bought mine from Crate.:devil: You have the latest version so you are good to go! You will love the extra power you get with this tune. It really kicks!!!:thumbs:
 

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Question: With an auto, is there any reason to do the GMPP upgrade prior to a quality tune from Vince/Trifecta? I know the no-lift shift is a nice feature for the manuals, but wondered if the Stage Two, as it used to be called, was a prerequisite for a better aftermarket tune. Thanks much, S
 

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Discussion Starter · #12 ·
OK... the GMPP tune is great. Very smooth power curve, and lots of it. Unless I decide to race, this enough power. Period. Now i need a new exhaust to sound cool. Suggestions?
 

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OK... the GMPP tune is great. Very smooth power curve, and lots of it. Unless I decide to race, this enough power. Period. Now i need a new exhaust to sound cool. Suggestions?
Solo GXP Mach is what I have. You should also get the Solo Hi Flow Cat while you are at it....combined you get a nice rumble but not overwhelming....plus you pick up some HP with Solo Cat. All comes together now that you have the tune.:thumbs:
 

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Where do I go to get these items. Will a GM shop do the install? Some idea of cost. I really appreciate any suggestions.
Google "Solo Performance" they ship everywhere. Not sure where you are located but they have a shop near Buffalo NY. If you go to them they will install for free. I went to their CDN location just outside of Toronto. If you can't get to them find a good performance or muffler shop in your area and have the items shipped to them for install.
 

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Discussion Starter · #16 ·
I looked up the muffler & cat. They look good. Will they really give the horsepower and torque increases Solo claims? Combined with the GMPP tune, that would be horsepower beyond 300.
 

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I looked up the muffler & cat. They look good. Will they really give the horsepower and torque increases Solo claims? Combined with the GMPP tune, that would be horsepower beyond 300.
On my old Gxp we dynoed just the hi flo cat and the race exhaust and saw 29 hp increase
 

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I looked up the muffler & cat. They look good. Will they really give the horsepower and torque increases Solo claims? Combined with the GMPP tune, that would be horsepower beyond 300.
Yep!!! I am configured that way and I figure I am 300hp or so.
 

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Discussion Starter · #19 ·
Ireally appreciate all the help. Another question; if I have the Solo Mach free flow exhaust system, and the solo free flow CAT installed on my GXP, will the engine need to be adjusted or re tuned. I already had my GM dealer install the GMPP tune? And what are realistic expectations from this modification?
 
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