Jump to content

GT500 CAI Pulley and Tune, 131 HP Gain


BradyPPC

Recommended Posts

Had a customer bring in his 09 GT500 today. The car is bone stock with 1200 miles on it. We added a Metco 2.6 upper pulley, Metco 90mm aux idler, JLT CAI, 1 heat range colder spark plug, and a custom tune. The combination netted a gain of 131hp/117tq at the wheels.

 

http://i548.photobucket.com/albums/ii353/brady/GT500/John/compare.jpg

 

http://i548.photobucket.com/albums/ii353/brady/GT500/John/after-1.jpg

 

http://i548.photobucket.com/albums/ii353/brady/GT500/John/DSC02873.jpg

 

We used the JLT Blue Carbon Fiber intake. It is hard to tell in the pic but the color actually matches the car pretty well.

 

http://i548.photobucket.com/albums/ii353/brady/GT500/John/DSC02869.jpg

 

Here is a stock pic of the front of the blower a well as the factory airbox.

 

http://i548.photobucket.com/albums/ii353/brady/GT500/John/DSC02862.jpg

 

Pic of the JLT/Metco setup from the front. We use the large idler off to the side of the blower pulley to add a little more belt wrap around the smaller 2.6 pulley.

 

http://i548.photobucket.com/albums/ii353/brady/GT500/John/DSC02867.jpg

 

Here is the hard data. The car picked up 131hp @ 6000 rpm and 117 lb-ft tq @ 2250.

 

http://i548.photobucket.com/albums/ii353/brady/GT500/John/Page1.jpg

http://i548.photobucket.com/albums/ii353/brady/GT500/John/Page2.jpg

 

As always, thanks for taking the time to look!

Link to comment
Share on other sites

I have a question. KB sells their Super charger and a dial in tune. Do you know how accurate their tunes are that they send you? It seems that no matter what it feels like it isnt making the power it should be. This is on a 07 gt500.

 

Mail order tunes aren't the way to go. A custom tune for each car is the way the go. I'm sure all of the guys tuning around town would agree.

Link to comment
Share on other sites

The customer picked the car up today. We did a pull this morning so he could see the car on the dyno. We basically got it up to operating temp and did the pull before the intake temps really got hot. Made 539/527.

 

http://i548.photobucket.com/albums/ii353/brady/GT500/John/glorypull.jpg

 

Customer was all smiles on the test drive! He was very pleased to say the least.

Link to comment
Share on other sites

The customer picked the car up today. We did a pull this morning so he could see the car on the dyno. We basically got it up to operating temp and did the pull before the intake temps really got hot. Made 539/527.

 

You need to get some stealth video of their face when you do this. I bet the expression was priceless :p

Link to comment
Share on other sites

I have a question. KB sells their Super charger and a dial in tune. Do you know how accurate their tunes are that they send you? It seems that no matter what it feels like it isnt making the power it should be. This is on a 07 gt500.

 

In my opinion, mail order tunes are either hit or miss. Personally, I dont do them as I would rather have the car in front of me and work off the data it presents.

 

How much boost is the KB running? Have you ever had it on the dyno to verify that everything is in line?

 

Mail order tunes aren't the way to go. A custom tune for each car is the way the go. I'm sure all of the guys tuning around town would agree.

 

I agree completely. Some cars respond better to certain things than others. I have had a few GT500's in here that all liked the same a/f timing combo and then I have had one that I ran at almost 3 degrees less than I normally would just because it didnt pick up any power with the additional timing. The car was brand new, bone stock, and in great working order, it just didnt like the timing and I wont run it unless it likes it. You would never know that without seeing it on the dyno though.

 

arent these things still 12 second cars even with 500whp?

 

Should be mid to low 11's with tires and the right driver. The biggest thing holding these things back is the stock 3.31 gears.

Link to comment
Share on other sites

You need to get some stealth video of their face when you do this. I bet the expression was priceless :p

 

He said he was only expecting 70-80 hp and maybe 100 lb-ft above stock. He about flipped when I showed him the graph. I thought he was going to kill us on the test drive afterwards. My pucker factor is pretty high too!!

Link to comment
Share on other sites

  • 2 weeks later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...