I want to tune my GXP and was wondering how much torque and hp gains can you get from HP tuners? I want to install a cold air inductions kit and a magnaflow catback. Which tuner would be more suited for the job?

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2007 Pontiac Grand Prix GXP
20% tint all around

Hp tuners is not a preset tune. It is a tuning software. So the gains will vary on your ability to tune yourself. Superchips flash is just preset tunes.

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are other tuners able to send their tunes around?

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2007 Pontiac Grand Prix GXP
20% tint all around

Yes they are, the tuner has a forum where people exchange info. There is also a tune repository where people upload and download tunes. But a word of caution downloading random tunes can lead to problems. The best thing you can do is read. There is a learning curb but not to difficult. And when you get good at tuning you can tune your car for your mods and maximize your cars performance.

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What is the difference in the flashpaq and the cortex for this vechicle? Has anybody on the fourums used the flashpaq or cortex tuner?

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2007 Pontiac Grand Prix GXP
20% tint all around

Custom tune is always better than a box/flash tune. Having said that I don't have any experience with anything other than HPT (for these cars at least) but if you, or if you know someone who knows how to tune or who has HPT, that would be the road I'd take since you can tune it to your specific mods/environment (available grades of fuel, outside temps, etc)/engine health/etc and not just a cookie cutter "safe" tune.

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Dubs:00 VW GTI VR6, Low and Slow 91 VW GTI 8v, Shave the Bay!! 91 VW Cabriolet 8v, bitch Basket
GP's:04 GP GT, Past now G-Ma's Girlfriend's 97 GP GT, "Project Pink Power"

i don't know anybody that can tune with HPT and i certainly don't know how. How much is of a gain possible for a magnaflow and cold air intake 07 GXP/

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2007 Pontiac Grand Prix GXP
20% tint all around

I use the cortex to tune my G8 and it works great. It's simple to use since all the settings are in a menu style format that give you multiple choices. The cortex has a warranty that covers the engine and trans and the flashpac doesn't, which is the only difference between them.

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Bright Red 2008 G8 GT

Mods: DRCUSTOMPARTS Center Gauge Bezel
Superchips ECM/TCM Tune- Volant CAI
Solo Axlebacks - HID's
Holden V8 Badges
My Website

Does the Cortex make the tranny shift harder?

-- Sun Jan 01, 2012 8:59 pm --

what are all of the flash tuners available for the 5.3L GXP?

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2007 Pontiac Grand Prix GXP
20% tint all around

The cortex has shift firmness settings that go from 0 (soft) to 100 (hard) in 25% increments.

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Bright Red 2008 G8 GT

Mods: DRCUSTOMPARTS Center Gauge Bezel
Superchips ECM/TCM Tune- Volant CAI
Solo Axlebacks - HID's
Holden V8 Badges
My Website

are the hp and tq gains very noticable?

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2007 Pontiac Grand Prix GXP
20% tint all around

I gained about 30hp from the premium fuel tune so it was a noticeable difference.

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Bright Red 2008 G8 GT

Mods: DRCUSTOMPARTS Center Gauge Bezel
Superchips ECM/TCM Tune- Volant CAI
Solo Axlebacks - HID's
Holden V8 Badges
My Website

has anybody on the forums used a superchips flashpaq or cortex for their Grand prix GXP

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2007 Pontiac Grand Prix GXP
20% tint all around

how much of a gain in feul economy can you expect from a cortex or flashpaq tuner?

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2007 Pontiac Grand Prix GXP
20% tint all around

It depends how little you push on the go fast pedal. I'm getting 18 mpg city/highway with a 6.0 V8 with DOD disabled, so I'd say it's pretty good.

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Bright Red 2008 G8 GT

Mods: DRCUSTOMPARTS Center Gauge Bezel
Superchips ECM/TCM Tune- Volant CAI
Solo Axlebacks - HID's
Holden V8 Badges
My Website

with the fuel economy setting I mean

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2007 Pontiac Grand Prix GXP
20% tint all around

I don't use the fuel economy tune so I don't know if it's more economical than the performance tune.

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Bright Red 2008 G8 GT

Mods: DRCUSTOMPARTS Center Gauge Bezel
Superchips ECM/TCM Tune- Volant CAI
Solo Axlebacks - HID's
Holden V8 Badges
My Website

Dont expect a ton of economy gain 2mpg at most

does the performance 93 octane tune make boost the mpg if you have a laid back driving style?

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2007 Pontiac Grand Prix GXP
20% tint all around

Couldn't tell you, I don't have a laid back driving style.

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Bright Red 2008 G8 GT

Mods: DRCUSTOMPARTS Center Gauge Bezel
Superchips ECM/TCM Tune- Volant CAI
Solo Axlebacks - HID's
Holden V8 Badges
My Website

I want performance but I also don't want to lose fuel economy due to the fact that I have an 80 mile round trip to work everyday.

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2007 Pontiac Grand Prix GXP
20% tint all around

It's kinda like finding a good looking woman that cooks and cleans......they're out there but...

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07' Crimson Red GXP w/ K&N FIPK Vice Pres. Indy Grand Prix Club.