2007 chevy- no performance gain

hernhi13 · Post by **hernhi13** » Thu Jan 15, 2009 11:18 am

u7194 - 2007 chevy silverado 4.8l

i have a k&n intake and tb spacer.
i installed the diablo tune and pumped 93 octane but still no performance gains, anything i might be doing wrong!!????

any help would be appreciated

Post by **06MonteSS** » Thu Jan 15, 2009 11:23 am

have you driven it for about 75 miles yet??? will get better as the settings get relearned by the ECM...

also, do some logging and get your fuel trims dialed in correctly... here's info:

http://diablosport.com/index.php?name=P ... opic&t=917

hernhi13 · Post by **hernhi13** » Thu Jan 15, 2009 4:46 pm

i drove it for more than 75 miles already. and is the usb cable included with the predator

Post by **06MonteSS** » Thu Jan 15, 2009 5:01 pm

no, the cable and power adapter are sold separately....

hmmm... you should be able to feel some difference with the tune...

neonhomer · Post by **neonhomer** » Fri Jan 16, 2009 10:50 pm

Could try reinstalling the tune. Maybe some of the settings didn't take properly.... (Unlikely, but possible.)

Not sure about TB spacers.... aren't those in the same class as "high flow" MAF sensors and those "Tornado" things?

Regardless, I notice a difference in power even on the 87 tune in my truck, and all I have is the K&N drop in filter.

NIGHTSTALKER · Post by **NIGHTSTALKER** » Sat Jan 17, 2009 12:41 am

stock truck on 91 tune and made a big diff, passing gear on kick down turns my 33's for about 20 feet.

hernhi13 · Post by **hernhi13** » Wed Jan 21, 2009 2:09 pm

I'm about ready to go return the predator. Not very satisfied with the product. Too much problems

Post by **mikel** » Wed Jan 21, 2009 2:15 pm

hernhi13 wrote:I'm about ready to go return the predator. Not very satisfied with the product. Too much problems

What problems do you refer to?

We are here to help, please be more specific.

Grumpy_Aero_Guy · Post by **Grumpy_Aero_Guy** » Wed Jan 21, 2009 3:34 pm

ya know... with all the folks running the U7194 on GM trucks of your model year/vintage, and, all of the consistent reports of gains "beyond expectations" I find this odd --- especially since you choose not to post anything of significance except for the proclamation that you are returning it.

Ditch the throttle body spacer. Make sure your intake ins installed appropriately (no leaks), that your MAF is installed correctly (and that it is the STOCK one), I am beginning to wonder whether there aren't a few more mods "forgotten" to be mentioned here, BTW, and ask specific questions.

Although very close to it, these things DO require a little playing with to extract the maximum potential out of it. Invest a little time and interest, and I think you can get where you want to go.

Lots of folks are willing to help. Give them a chance, or, RETURN IT ALREADY.

Grumpy_Aero_Guy · Post by **Grumpy_Aero_Guy** » Wed Jan 21, 2009 3:34 pm

ya know... with all the folks running the U7194 on GM trucks of your model year/vintage, and, all of the consistent reports of gains "beyond expectations" I find this odd --- especially since you choose not to post anything of significance except for the proclamation that you are returning it.

Ditch the throttle body spacer. Make sure your intake is installed appropriately (no leaks), that your MAF is installed correctly (and that it is the STOCK one), I am beginning to wonder whether there aren't a few more mods "forgotten" to be mentioned here, BTW, and ask specific questions.

Although very close to being plug and play, these things DO require a little playing with to extract the maximum potential out of it. Invest a little time and interest, and I think you can get where you want to go.

Lots of folks are willing to help. Give them a chance, or, RETURN IT ALREADY.

Post by **06MonteSS** » Wed Jan 21, 2009 4:19 pm

geeez, you ARE grumpy!!

posted it TWICE no less!!

hernhi13 · Post by **hernhi13** » Wed Jan 21, 2009 5:16 pm

Alright. Ya talked me into it. I have the stock mass sensor, so no problem there. The intake was installed where bought. Those work great!! The diablo was installed whre I bouhgt it also. I went back a week later to get it tuned. I got a call from work to go oklahoma. So if ya tell me where I can take the diablo to get tuned, I would give it another shot. I'm in woodward oklahoma

Grumpy_Aero_Guy · Post by **Grumpy_Aero_Guy** » Thu Jan 22, 2009 11:43 am

sooo, you didn't put the tune in yourself?

if not, I question whether it's got the tune IN it.

hernhi13 · Post by **hernhi13** » Thu Jan 22, 2009 12:15 pm

Last night, I checked the last tune written. It said diablo tune. So I will take that as a yes, it was IN the truck

Stevens07 · Post by **Stevens07** » Sun Jan 25, 2009 11:34 am

You need to do some data longing on the LTFT's and get them dialed into your truck. Your final result should be 0 to -2 for maximum performance gains. If the LTFT's are reading 5, then you need to adjust your injector slope -5.

Steven

2007 chevy- no performance gain

2007 chevy- no performance gain

RE: 2007 chevy- no performance gain