**OMG-VRUS TB shows "wicked" Dyno Results**
Chris @ C2Designs dynoe'd the car today w/VRUS 80mm TB installed - Results are thru the roof!!
On 4 pulls Chris said the best #'s as follows:
528 RWHp // 595 WRTq (not on the same pull)
Of course we ?'d why such a drastic improvement? I'll list as follows:
-Pre TB -------- 80mm TB
457/519 ------- 528/595
95 degrees ---- 70 degrees
A/F "Pig Rich" -- A/F near Perfect
He stated that the Dyno was the Dynojet "Large wheel" for bigger
powered cars and this machine although maybe a "tad" high,..he does
say the car runs like it is making this huge power!
Chris @ C2Designs has repeatedly said now that it will "leave tracks"
from 50-60 mph. -No Sh**! Says the car is "ridiculously fast"
and he feels the car is "dialed in" about perfect!
I'll post Dyno graphs as soon as I get the file!
Kudos to you Victor (VRUS)-GREAT Mod!!
I fly up to Tampa next Monday to pick up the car & drive home.
Full report to follow!!
Last edited by Kens-E55; Oct 25, 2006 at 08:06 PM.
Get ready to defend the dynos. Also, get to the track ASAP.
Believe it or not I just got back from a trip to the track and for the second consecutive time they closed the track at the last minute.
I do not trust my butt dyno or for that matter, any dyno. I think trap speeds tell the real story when you're talking performance modifications.
But to answer your question..........Yes, I feel a significant difference. As a matter of fact, my ESP was engaging tonight when I would stomp the throttle at 75mph.
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JakPro1 was showing 559rwhp with his TB & SLR cam combo.. and he was a K2 car before also.. Your car with 528rwhp is right inline.. The SLR cams we guestimated were good for 20rwhp - 25rwhp which is close to what the gap is.
Have fun & enjoy that monster!!

P.S-> My car went super lean when I finished with the TB but I had a good A/F to start.. Your car with a pig rich A/F, the 80mm TB was just what the doctor ordered to "dial it in" as Chris said..
Last edited by vrus; Oct 25, 2006 at 07:57 PM.


Thats A huge difference in power with just the TB
I cant wait
are the pulls SAE corrected? should that take care of the temp difference?
Ken... let's try it out at Moroso... finally some decent weather here....
My 457Hp was Pig Rich in 95 degree weather and uncorrected
The A/F ratio was close to 10:1 and I never got the ECU re-programmed f/Klemmann before the TB install. When I study before/after..a few thoughts
1.) 25 degrees cooler(today) on FI motors is worth 20-25hp alone!
2.) A/F going f/10:1 to 12:1 is probably worth another 15-20Hp
3.) That means the TB realistically is giving me 30'ish Hp(that's believable!)
I knew going in I would see a Huge jump because my new K2 w/o being re-programmed was showing only modest gains.
Most on the forum are 470hp - 500hp "tuned" --w/K2...I was @457 "untuned"
Yes... the track will be the proof - I'll be out there the first chance I get.
I'm sure there are a few sceptics...but the law of engine physics does
suggest this to be at least possible. I'll post graphs as soon as I have them.
Last edited by Kens-E55; Oct 25, 2006 at 08:46 PM.
Great explanation and I agree 100%.. Makes perfect sense..
The next restriction in line now is the airbox and tubes... Gee.. I wonder what is coming off the assembly line soon to take care of that problem.. LOL..

My 457Hp was Pig Rich in 95 degree weather and uncorrected
The A/F ratio was close to 10:1 and I never got the ECU re-programmed f/Klemmann before the TB install. When I study before/after..a few thoughts
1.) 25 degrees cooler(today) on FI motors is worth 20-25hp alone!
2.) A/F going f/10:1 to 12:1 is probably worth another 15-20Hp
3.) That means the TB realistically is giving me 30'ish Hp (that's believable)
I knew going in I would see a Huge jump because my new K2 w/o being re-programmed was showing only modest gains.
Most on the forum are 470hp - 500hp "tuned" --w/K2...I was @457 "untuned"
Yes... the track will be the proof - I'll be out there the first chance I get.
I'm sure there are a few sceptics...but the law of engine physics does
suggest this to be at least possible. I'll post graphs as soon as I have them.
Please understand......my K2 was not tuned but the TB, 25 degrees cooler, & VRUS 80mm TB worked wonders for bringing the A/F ratio to almost perfect!!
If I would have tuned my K2 originally, & done a dyno pull in 70 degrees.....
the REAL Hp # would have probably been more like 490-500Hp
The TB did not give me 71 HP......................but everything
else coming together at the same time netted me a TOTAL of 71Hp.
Please see my explanation a few threads above this one.
My tuned K2 w/VRUS TB(K3VRP) ..... is now in line with everyone else!
Last edited by Kens-E55; Oct 25, 2006 at 09:29 PM.
Please understand......my K2 was not tuned but the TB, 25 degrees cooler, & VRUS 80mm TB worked wonders for bringing the A/F ratio to almost perfect!!
If I would have tuned my K2 originally, & done a dyno pull in 70 degrees.....
the REAL Hp # would have probably been more like 490-500Hp
The TB did not give me 71 HP......................but everything
else coming together at the same time netted me a TOTAL of 71Hp.
Please see my explanation a few threads above this one.
My tuned K2 w/VRUS TB(K3VRP) ..... is now in line with everyone else!

Oh no way?? I thought you leaned out the A/F yourself while the car was on the dyno. The TB alone brought you down in richness? Thats awesome. Does that mean you were running that rich the whole time with K2? I would think that by stage 2 Klee would make some adjustments to your A/F to even it out... Very impressive gains nevertheless. I need one of these TBs.
Last edited by zdkdeeier493; Oct 26, 2006 at 12:50 AM.
One thing led to another...I did not want to wait....so I went ahead and picked up my car w/out it being properly tuned. The extra air from the new 80mm TB brought everything in-line where it should be.
I should have the dyno graphs in my hand this morning to see everything exact!!








........are u going to be in Atlanta Nov 4,5,? Great time to run....