JWT vs Enthalpy ECU comparison dyno results!! *Another* 400 whp CodyAce Built Car

[HemiCharger]

Originally Posted by jspaeth

you have a "cammed" S14 motor, but kept VTC...what does that mean?

You have aftermarket VTC cams? Who even makes them? (I have never heard of it, that's why I ask)

Greddy Easycams

Greddy - Founded and Driven by Racers

I keep the VTC on the intake cam and it makes for some extra mid range punch. Lower duration than most other aftermarket cams so you do not get the top end of the other aftermarket cams but they are nice and no after market valve train is needed. I made 334whp/311TQ on them and I like em a lot.

[2fast4y0u]

i have the same setup...basically, and im waiting to get to the dyno. im using an enthalpy tune and i couldnt be happier with it so far. i have 300 miles on it some far, did 90 miles the other day with my brother and his m3. I have heard great things about JWT and have used them for misc. things awhile back.

Originally Posted by HemiCharger

Greddy Easycams

Greddy - Founded and Driven by Racers

I keep the VTC on the intake cam and it makes for some extra mid range punch. Lower duration than most other aftermarket cams so you do not get the top end of the other aftermarket cams but they are nice and no after market valve train is needed. I made 334whp/311TQ on them and I like em a lot.

you are smoking a gsxr750 with 334 whp? or is that what you HAD and now you have more? my cousin has a gsxr750 and he is doing 10.4 in the 1/4...its fucking fast! he has slips to prove it.

[HemiCharger]

Originally Posted by 2fast4y0u

i have the same setup...basically, and im waiting to get to the dyno. im using an enthalpy tune and i couldnt be happier with it so far. i have 300 miles on it some far, did 90 miles the other day with my brother and his m3. I have heard great things about JWT and have used them for misc. things awhile back.




you are smoking a gsxr750 with 334 whp? or is that what you HAD and now you have more? my cousin has a gsxr750 and he is doing 10.4 in the 1/4...its fucking fast! he has slips to prove it.

I do not know could have been a 600 not sure. I know crotch rockets are fast but once you break loose and are within a half sec or so of the car or bike you are running it is really hard for them to pull on you. Look at the torque number I am within 10-12 of cody's 400 whp run. That is pretty good IMO. I guess I do have a little more cause that is what it pulled before as a base line -- I have guessed my car to be a 11 sec car could be high or low depending on driver.

[codyace]

Originally Posted by HemiCharger

It is your setup and what you like but I can tell you have had my swap now for 50 thousand miles and have been running 18.5 lbs of boost with my Power FC for almost 2 years now and I burn no oil nor use any coolant. The power FC is what they would use on the car in Japan at a specialty tuner shop. It can be street tuned unlike a canned tune. You will never be able to get all that there is out of your setup with them no matter what cause they are limited in that regards.

I'm not disagreeing that a PFC isn't good - I just think that for a car under 400 hp, this side of a track race fuel car, that a Enthalpy or JWT ROM tune will net as much average and peak power/torque than any off 'custom tune'. (If that makes any sense). You have a PFC = Great...this thraed is just a representation of what a nice, 500 dollar off the shelf tune can produce...versus a 1000+ setup.

Awesome on the milage too. I also do 4-5 track (HPDE/timed) events all summer, so take that into consideration. They always say 1 mile on track is equivilent to nearly 5 of street driving, so I'd like to think to continue making the power I do, and to not have any oil issues or anything, that it's pretty good for a rom tune.

Originally Posted by 4x4le

No, at least not the guys I know with them. I have hung with some of the slower 600s but they are usually still faster.

It also comes down to gearing/speed as well. Also how good of a rider you're verse. To catch a big from a low (10ish hit) it's going to take a solid 450 whp to keep up. Catch them mid range and it's good fun.

Originally Posted by OBEEWON

Good work Cody.
You want to tune my RB, and use it for an A/C bracket guinea pig??

LOL I'm scared of RB's! They just don't like American air hehe. Everyone that's come to our dyno day has had issues hehe.

(Have you checked Evans TUning, or RT??)

Originally Posted by HemiCharger

Then I guess I would just have to forget about the Triumph Daytona or GSX750 I smoked. They pull hard but I broke away with like 3 cars on the GSXR and he could not over take me

Sure it wasn't a Carb'd 750? Sounds like a rider issue.

Originally Posted by HemiCharger

-- I was having spark blow out at the time with .044 gaped plugs which I have since fixed. Gaped to .028.... which is what they need. My car might be different though. I make mad mid range torque and horsepower. I have a cammed s14 motor with a GT2871R and I kept VTC so my midrange at 3000 rpm is at least 100 hp more than a normal SR s13 motor. My tuner over laid the graphs when we tuned it. I make around 80-100 whp more than a comparable s13 motor up till I reach peak where they end up the same. I think the mid range matters a lot?

100 more hp at 3000 rpm is a nice claim, but I'd love to see it. FWIW: These ROM cars that I help build usually make double what a stock turbo car does at that idle...even still though it's not a place where I'd put to much focus on in regard to power for our setups...with a good final drive you're hardly ever below 3000 as it is.

I like .022 to .025 for gap. Never had an issue, good power, 30mpg+ highway.

Originally Posted by HemiCharger

I am within 10-12 of cody's 400 whp run. That is pretty good IMO. I guess I do have a little more cause that is what it pulled before as a base line -- I have guessed my car to be a 11 sec car could be high or low depending on driver.

Got any graphs?

PS: A 400 hp car at our light weight should be a 11.0 car with a good 60. I went 11.65 @ 120 my first time out, with a crappy 1.88 60'. I also didn't touch my suspension settings or alignment from the HPDE day, so that wasn't helping either. Not bad considering I can't drag race. With more practice and a launch program I'm sure it would run a nice deep 11. BUT I could care less...these are response oriented cars, for road course days


Again, lets keep focus on the point: Badass ROM tunes are available for our cars....at an affordable price. For a ture 'bolt on -do burnouts' solution, I can't be happier.

[2fast4y0u]

Originally Posted by codyace

Again, lets keep focus on the point: Badass ROM tunes are available for our cars....at an affordable price. For a ture 'bolt on -do burnouts' solution, I can't be happier.

i hear that! nothing like smoking the shit out of the tires pretty much when ever.
if i could only get my clutch to hold better

i cant wait to see what i run this year at the track. im going may 29th to the drag strip. should be interesting

[Choku_Dorian]

this is rad.

I am running almost identical setup, with enthalpy tune. just the s4 cams...

[Blacklines86]

Thanks for answering my questions, I appreciate it. I went back and looked at the first page, and I saw that it was already stated the setup included an external wastegate. After reading the 8 pages in this thread, I must have forgot.

What is your opinion of knife edging the crank? There is a service called "butcher crank" that does this, and takes 7 lbs. off in the process. Would this be beneficial to this setup, or is it too much material to take off? Would a less aggressive knife edge and a balance be better?

Assuming one were to do the agressive knife edging, how would additional lightening of the drive train affect preformance, such as lightened flywheel, carbon or aluminum drive shaft, etc?

Im aware of the rotational mass discussion, but the arguments go back and forth, so I'm not sure what to believe about this issue.

Any thought or opinions?