We strapped the car on the dyno late Friday to see what the car would make. Ended up having some issues with the boost controller, and making a pull on the springs proved there was a issue with it. Greg@RET had some prior things he had to do on Sat. so he gave me the key to the shop so I could come in and put another boost controller on. To my surprise he called me later on Sat and said he would come tune the car. I dont have any video of the dyno other then on my phone, but I will put that up later. The blue is my street tune on 13#, and the red is on the race tune with 19-20# The HP SAE was 680rwhp. When we turned the boost up we has some spark blow out since my plugs were gapped a little to big and have been in my car for about 9 months.



FFW is coming this week, but I dont have a cage in my car yet. So I dont want to waste my time, especially being the first time out. I am going to run the car at Famoso Raceway instead. Track times coming up!


Background on my car:

Twin THP 57mm kit

4r70w built trans and Lentech convertor

Low compression built motor- stock heads and cams


A couple months back we put the car on the dyno with the motor set up NA and the built 4r70w with a custom tune. The car made just over 250rwhp. I thought it was cool to see that my motor and trans combo makes about 30-40rwhp less NA then your normal GT.

graph

 

Very Nice numbers!

What made you change from
Twin Screw to Twin Turbo?

 

Needed more power to achieve my goal to run 9's. my car is making over 150 more rwhp and rwtq than my set with the small 2.4 kb and I also have now a built 4r70w, my transmission robs like 15%more than a stock 5 Speed. I am just simply amazed with the numbers the car comes like if I had a Jet engine hidden somewhere. I am very pleased with the numbers and as soon as time permits I will post up the track numbers.

 

Glad you like it.
Sounds like you've got insane power!
I mean the new transmission is robbing
15% more of the power than a stock
manual, and you're still getting almost
700 to the wheels, NICE!!

Update us with track numbers,
hope you achieve your goal soon.
Good luck..

 

Thanks man. I will keep the thread updated. I am a member of several boards and will try to keep all of them updated with the information.

yes it made 150 more horsepower just from a change of power adder and 2 more pounds of boost.

The car would make close to 800 with a manual trans.

Turbo is the way to go to make power, no need to build a insane engine with PP heads, stage 3 cams, Long tubes, TB's and all that BS. Just a turbo kit and that's it.

I didn't mention before that I am using a custom return fuel system on the car. I don't have a gas tank anymore, instead I have a 15 Gal fuel cell in the trunk.

 

Great numbers. We have similar goals. Been over 2 months since car has been to track. Starting to experiment with small shots of nitrous. Need a new dynotune before going back to strip, to correct fuel issues. Good luck with 9s.

 

dam, congrats.

 

thats some serious power. I'm sure it has no problem keeping you @ss glued to the seat!

 

Congrats awesome setup and power!

I noticed it look like a lot of timing was pulled for some reason in both runs early and then later on in the rpms in the #19 run which I assume that is the spark plug blow out ( almost looks just like converter slip) you are having.

Curious to the reason for the early timing being pulled?

 

What CR you running? stock displacement? what you got valvetrain wise?