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I love Cin
91 Turbo MR2
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2,312 Posts
Discussion Starter #1
I redynoed Hyde today.
The only changes on Hyde since last year's tune were the addition of a Walbro fuel pump and a Ross Machine Racing Manifold. I know Tom @ Ross and everyone else on here is going to be super excited to see these results since the only real change was just the manifold.

I want to thank Eric and Benny at World Motorsports (Chris Rado's Shop ~ they were awesome to deal with!)

Manifold is here:
http://www.rossmachineracing.com/mr2intake.html
(search show-n-shine" for my threads with the powder coated pics)

Last year: Street tune (29 psi FP): 15 psi (boost) = 258 rwhp
This year: Street tune (30 psi FP): 15 psi (boost) = 302 rwhp
This year: Race tune (40 psi FP): 15 psi (boost) = 312 rwhp

(race tune is a bit more aggressive)

Your eyes are not deceiving you, the manifold made 44 RWHP on a 198,000 mile engine! I do not believe any other manifold has done that.
Here's the kicker. I had a boost leak AND we did not really "tune" the car. We actually used the "tune" NoShoes gave me, but I upped the FP 1 psi.

BIG BOOST
Last year: Race tune (35 psi FP): 20 psi (boost) = 308 rwhp
This year: Race tune (40 psi FP): 20 psi (boost) = 344 rwhp
This year: Race tune (40 psi FP): 22 psi (boost) = 351 rwhp

The lack of big increase from 20 psi to 22 psi is most likely due to the boost leak.

Again this was with a boost leak and we did not make any adjustments on the SAFC or the VPC from last year (lack of time).
There is absolutely more power to be made with the car the way it sits.

Torque actually stayed about the same and I did lose some low- and mid-range power.
You will note on the dynos that in the mid-range it got pretty "fat" (rich) ... so there is more power to be tuned in there, we just did not have the time to look for it today.

I went for a very short ride @ 20 psi after the dyno and I managed to miss every gear! ... the car screams to redline now. Notice no drop off on the graphs, it just keeps climbing. I am going to have to alter my shifting habits to get used to this.
My 235 street tires had zero traction for all of 1st on a heatlhy launch ... :headbang

351 RWHP video (notice the water injection spraying out before the TB, that is where the leak is):
http://www.jekylhyderacing.com/images/hyde_351_dyno.mpg

15 psi & 20 psi dyno:
http://www.jekylhyderacing.com/images/hyde_dyno_15_20.gif

22 psi dyno:
http://www.jekylhyderacing.com/images/hyde_dyno_351.gif

Old 15 psi and 20 psi dyno:
http://www.jekylhyderacing.com/images/hyde_dyno.jpg
 

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I do NOT exist ...
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167 Posts
JekylandHyde said:
I went for a very short ride @ 20 psi after the dyno and I managed to miss every gear! ... the car screams to redline now. Notice no drop off on the graphs, it just keeps climbing. I am going to have to alter my shifting habits to get used to this.
My 235 street tires had zero traction for all of 1st on a heatlhy launch ... :headbang:
this is the part that has me now craving this manifold. :boink:

:thumbup: i sent kudos to you and Hyde on the other board, but you'll both get nothing but love from me here, too.
 
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