I did some before and after runs on my g-tech pro comp meter with and without the granatelli maf sensor.Before I got the g-tech I could not really tell if the granatelli really made a difference or not.Tonight on my way to the woodlands I made several runs before and after.With the stock sensor my truck ran a 15.36 at 88 MPH.I pulled into a parking lot and put the granatelli in and then I did another run at the same stop light as before.This time it ran a 15.25 at 89MPH.I had hard time beleiveing that it dropped the times a whole tenth so I put the stock maf sensor back in and did it again.
Stock sensor:
60ft. 2.31
1/8mile 9.86 at 71
1/4mile at 15.38 at 88

I then put the granatelli back in again and went to the same light again and made 1 more run.
Granatelli maf sensor
60ft. 2.268
1/8mile 9.72 at 73MPH
1/4mile 15.26 at 89MPH
Sorry this is so long but I did not beleive that the granatelli made any difference at all so I did some runs and both times it helped my times out a little.I did a total of 4 runs,2 on the stock MAF sensor and 2 on the granatelli MAF sensor. I just wanted to share this with yall.
Later guys

 

That's some good info, keep it up! Did you do any before/after times with your other mods?

 

did you tell lyndon you had a granatelli? if so he tuned for it.

 

I honestly can not remember if he tuned for it or not,I am just worried it is runnin to lean.I did some runs after the elecreic fan install but did not notice any drops in times.

 

I heard they grannatelli will give you a little SOTP kick in the beginning but once the computer learns agian ... bye bye

 

vortec350, im just curious why you dont go with long tube headers and dual 2.5" pipe. You would get really good gains with them over the shortys and stock crosover pipes. Arent the crosover pipes like 2.25", and not manderel bent, making them like 2" pipe?

 

Yep, they are all bent

 

I am thinking about some thorleys headers,they are 500.00 for the ceramic coated and that is what I am goin to get.I am just worried that it will lose lowend torque with the longtubes.What have experienced?

 

Longtubes are what everyone says you want if your gonna get headers

 

yes i have been told longtubes are the way to go by a lot of people but they arnt to cheap



01 yellow 4.8 flowmaster and hypertech