I'm writing this because I heard that Vago put out a nice number at Area 51 with his HyTech equipped ITR, and it made me want to look at what had been published. The peak number we all know tells a tiny piece of the story - I was keen on what kind of performance the HyTech equipped car delivered thruout the useful powerband. Here is my tabular summary of Andy's data (JDM Header, Mugen ECU, FPR), Comptech's data from their website, and the old data from Austin's run last year (the same one John had with him at the Expo).

And, yes, I know I'm comparing different dyno's on different days...blah, blah, blah......It's all there is in the public record. Note: Comptech didn't publish torque.
(Added: Area 51 is a Clayton (supposed to read lower than a DynoJet))
(Added: Johns data from Vago's run)

--------------Andy----------------------Comptech-----------------HyTech-Austin-------------HyTech-Vago
RPM---------TQ/HP---------------------TQ/HP------------------------TQ/HP--------------------TQ/HP

5000--------118/113------------------xxx/110----------------------114/109------------------122/117

5500--------122/127------------------xxx/122----------------------121/127------------------120/126

6000--------132/152------------------xxx/146----------------------129/148------------------137/157

6500--------130/161------------------xxx/163----------------------126/156------------------129/158

7000--------128/171------------------xxx/173----------------------125/166------------------129/170

7500--------128/183------------------xxx/181----------------------126/178------------------130/185

8000--------124/188------------------xxx/183----------------------124/187------------------127/189

Note: Austin's car had a full streetable HyTech exhaust (which I didn't like the sound of as much as a Mugen Twin Loop and whatever RMR was running at Expo). Andy has some kind of straight thru muffler dumping under the car.

Scott, who doesn't need a flame suit because flame is transient.....



[Modified by RR98ITR, 5:21 PM 1/24/2002]

 

This is going to be interesting...

 

Very interesting

 

Holy Sheez that is funny as hell.

 

Trying to draw any conclusions from that mess is kind of silly, don't you think?

Three diff cars...diff dynos...geez who cares... buy a header you like and can afford, it'll work fine. I thoguht we all learned that in the big header test.

Well... unless you're spending $10k on your motor, then yeah, you need a big ol thing that costs $1000.

 

If I have a point to make, that could be it.

Scott, who hopes nobody makes too big a deal about this stuff.....I'm certainly not trying to...

 

All cars are running stock TBs, intakes and cams - how can they possibly differ that much in terms of air flow (cfm)? Airflow and fuel determine power right?

 

NICE!
Almost enough of a reason for me to stay N/A.

 

Kinda... but it's interesting either way.
I've got something similar but all run on the same dyno.

1- ITR motor w/ CTR pistons, JDM 4-1 and Skunk2 cams
2- ITR motor w/ ITR pistons, DC JDM and stock cams
3- ITR motor w/ ITR pistons, DC JDM and ported head w/ stock cams
All three motors have V-AFC, OBD-1 conversion w/ Skunk2 ECU
All three motors have exhaust(GReddy on 1 & 2, RSR on 3), and all have test pipes.

Results are surprising.

Lemme know if you want it.

 

How can you tease people like that. Of course we want the results.

CB

 

Here is some more to think about. Vago re-dynoed his car at the area 51 dyno day on th 20th. I was not there, but he has put plenty of miles on his car and it is getting broken in by this time, here are the numbers he sent me from that day. The only changes are a new car sound cat, his random cat fell apart and we installed a resonator to help with the sound. I'm sure Vago will verify these numbers.

RPM torque Hp
5,000 122 117
5,500 120 126
6,000 137 157
6,500 129 158
7,000 129 170
7,500 130 185
8,000 127 189
You can draw your own conclusions.

In a few weeks we will be running a new blueprinted 2000 Type R race motor. It is a stock Type R, but we went through it and cleaned up the head, changed the rods and pistons to better units, and a few more tricks. It will have new exhaust that we will be trying on it. The only other upgrade is a Mugen ECU. I will post the numbers when we run the car.

 

[Modified by Black R, 4:59 PM 1/24/2002]

 

doesn't dyno'ing in the 3rd gear or 4th gear make a diff? I'm not sure what gear andy or the comptech did there's on, but at Area51 they were doing 3rd gear pulls.

yoshi - who wasn't sure *shrugs*

 

Yes, it does make a difference.

 

And the efficiency of the combustion (A/F ratio, swirl effect, ignition timing, and more)......

 

Some people likle using 4th gear since it is the closest to 1:1

 

Uh... rods and pistons are NOT what I consider minor changes.

Warren

 

i think that was pretty clear when it began with blueprinted ITR race motor. That doesn't mean its not a good test mule since its running a mugen program, itr intake manfold etc which alot of people do to their itr. Rods don't really add power and pistons "may" add compression. These things including the head may be a part of the blueprinting and balancing that was done.