New Whipple intake by ST Motorsports TESTED!

psfracer · 12-22-2007, 05:40 AM

My goal has always been to run 10.60's so I can run in the PSCA 10.60 class. With the stock whipple intake setup and a BBK throttle body, my best however has only been a 10.77. I knew of Adam's intake work with the KB's so I thought we would try the same thing with the whipple.

I wanted to see what difference the ST sheet metal supercharger intake, the accufab throttle body, and the ST intake tube would make. Even though I have had my car dyno'd many times before, we decided to re-dyno everything in back to back tests to really see what difference this setup was worth.

All of the following dyno runs were made within 3 hours of each other. The first dyno run was made at 63 degrees where as the last dyno run was made at 58 degrees. NO TUNE CHANGES, NO PULLEY CHANGES, just the intake setup and thats it. All numbers are SAE. Uncorrected the numbers were actually higher.

First was to dyno the stock whipple system along with the stock throttle body. With this set up and the same exact tune, I ran a 11.32 @ 119 at Ca Speedway in October at FFW. With two baseline passes, the numbers that came back were as follows:

Run#1: 483.62rwhp / 456.70rwtq
Run#2: 484.49rwhp / 457.95rwtq

Now, one might say that is low for a whipple at 16psi. But that was exactly my point---because of the stock throttle body being the restriction, there was really no difference at all in power between the whipple at 13psi and at 16psi. (A few months ago I was running at 13psi with very similar numbers)

Next test was really just for me, as I wanted to see exactly what the numbers were with the BBK throttle body and stock whipple setup. With this setup, I ran a best 10.77 @ 125.82 mph at FAMOSO in November.

That dyno run came back at 511rwhp. So this throttle body on a whipple running 16psi, with no other changes, was worth 27rwhp. This in my opinion proved that the stock throttle body was indeed a big part of the restriction once you decide to go over 13psi on a twin screw supercharger.

Next up, Adam pulled off the stock setup and put on the sheet metal intake, the accufab wide mouth throttle body (1600+cfm) and a larger intake tube which also runs outside the engine compartment (like the KB setup).

We ran three dyno runs with the following results:

Run #1: 576.90rwhp / 517.51rwtq +92rwhp over baseline
Run #2: 565.50rwhp / 519.28rwtq +81rwhp over baseline
Run #3: 571.43rwhp / 518.24rwtq +87rwhp over baseline

Remember, this is an auto to boot---so with a manual this car would be 600rwhp!

Since I have already ran a 10.77 @ 511 rwhp, I can't wait to get back to the track with 577rwhp---I am hoping for 10.4X's!

Here are some pictures which include:

1) the ST Motorsports intake setup (577rwhp)
2) picture of the three different throttle bodies
3) picture comparing the stock whipple intake vs the sheet metal intake
4) dyno graph

Since I now will easily be able to run the PSCA 10.60 class, I won't even need my Innovative 10% overdrive crank pulley---anyone want the buy that from me? I also now have a BBK throttle body for sale! PM me.

I will upload a video of all of the dyno runs tomorrow and post the link, its uploading now but will take a while.

By the way, I saw two 3.4 whipple superchargers at ST today---wonder who is getting those......

psfracer · 12-22-2007, 06:02 AM

Some more pictures:

Dyno vid of all the dyno runs will be up tomorrow...

LSlayer · 12-22-2007, 06:53 AM

Brutiful!!!

When I get back to the states I may just fly straight to cali and let Adam go to town on my stallion and wallet. Where does the filter rest? Any water injestion issues?

Anthony05GT · 12-22-2007, 08:51 AM

Can't argue with facts! This is a very informative post and layed out well. You shouldn't have any problem with 10.60's. Now, go kill Kenny!

Hey, Kevin MacDonald (Diablosport) just bought a Whipple 3.4 for his Lightning. He's going to run the same boost as the other Whipple, only it will run much cooler and lay down sweeter #'s.

psfracer · 12-22-2007, 11:22 AM

OK, so here is the video.

At 1:49 it stops for some reason, you have to click on the progress bar to skip like 5 seconds then it continues. I have no idea why---I guess I have to upload again...

Testing the ST Motorsports intake setup vs the stock whipple setup

And some basic information about the car that I did not include in the first post:

Whipple 2.3 @ 16psi
Built bottom end (JE pistons 8.8:1--scat rods, cobra crank, cast iron block)
Stock heads
Stock cams
Dynatech 1 3/4 primary pipe to 3 inch collector long tubes, x-pipe, no cats
PI 3300 stall converter, 5 speed automatic
4.10 gears, various suspension parts, etc.

Anthony05GT · 12-22-2007, 11:27 AM

You know how that stock Whipple intake tube is all restricted in the area where the fuel rail adapter goes. It really flattens out there.

94tbird · 12-22-2007, 12:15 PM

awesome. My ST motorsports inlet tube, TB and Intake tube are all waiting for my lowely 2.4L KB

psfracer · 12-22-2007, 12:48 PM

Here is how the intake tube is routed to outside the engine compartment:

1) ABS relocated, but no cutting yet
2) ABS relocated, cutting complete
3) ABS relocation bracket (I am going to paint it flat black)

And yes its flithy, just got done raining for 3 days here---I yes I daily drive this thing--70K miles so far!