Just wanted to throw out some numbers i got after hittin up a dyno. THis was done on a "Dyno Dynamics - 4WD/AWD Lowboy 450 Chassis Dynamometer." About 45 deg F outside, and raining a little bit. As far as engine performance mods, all my 05 6MT sedan has is a z-tube and gordgee 8-wire grounding kit. I am planning to install my MD copper iso-thermal MREV kit sometime next week or the following week, and will definitley bring it back to the same place to see the effects.

SO looking at the graphs, few things. . .
-HP curve steadily rose to 242 HP by 7000 rpm. . .
-An AMAZING trq curve that stayed almost pefectly flat all the way up to 7000 rpm (nice to see power everywhere/anywhere i want it)
- Trq topped out at about 212 lbs-ft at about 5000 RPM. . .
-As you noticed, i had 3 runs, and each run consecutively pulled higher numbers, meaning, the ECU was learning after each pull. . .and perhaps i woulda pulled higher numbers if i did more runs
-A/F ratio wasn't as consistent as i would like it to be, but not bad though
-Notice a decrease in A/F with last pull (Green curve). . .meaning increase fuel usage

SO, i'm happy with my results, about where i expected them to be. ANd it'll def make me happier to see a significant increase after that MREV kit is installed. . .which i will post up once done. and if i get my demon eyes on there, maybe that'll give some extra juice too. . .or just look damn COOL enjoy.

 

Good numbers bro, congrats.
C.

 

Are those numbers SAE corrected?

 

Nope, they are not SAE corrected. So, all that data is "true" given those conditions. Once i re-dyno it after the mrev kit (given teh conditions are different that day), i'll recalculate it with the correction factor. plus, i didn't reset the ecu or anything, so, there r still alotta factors that could give me different numbers

 

Gotch ya. Nice numbers anyway.

It just would have been nice to see SAE numbers before and after the mrev kit so we could see real life gains with a little variance as possible.

 

Good numbers. But I have a few questions:

How many miles do you have on your car?
What brand/octane gas are you running?
Which gear was used for the pull?

I got very similar numbers on my sedan on my first trip out. I had a ztube at the time, and prolly around 6 thousand miles(IIRC). My dyno was in third gear, and I pulled 241.9hp and 210tq.

The next time I went, my torque jumped to 233 when dyno'd in 4th gear(didn't dyno in 3rd at the second dyno). I did have a k&n and kinetix cats, and I had about 10k miles at the second dyno.

And one last thing. You observed that you got better numbers with each pull. This is typically a result of the viscosity of your tranny fluid, etc, changing as it gets warmed up. At least that's what I read on dynojet website.

 

My car has about 4800 miles on it, 93 octane, and the pulls were done at 4th gear actually. I'm not an expert at all on dynos, but they Dynoyjet is a inertial dyno, while i used a variable load dyno. "Inertial dynos accurately measure the speed of a fixed mass while it is accelerated by the engine. Variable load dynos adjust the load on the dyno until the engine output is balanced by the dyno resistance, and then measure the resulting torque." (Google'd dyno types) SO, meaning inertial dynos are only good for performign power runs, and variable load dynos give 'real time' numbers. also beign more expensive i believe. I think this was discussed before, differnet types of dyno's would give u different numbers, even if it is teh same exact weather conditions. 23 lbft trq increase is pretty drastic for just those 2 mods u added. But like u said, different gear could possibly accoutn for in-accurate numbers in comparison to ur previous numbers. As far as getting better numbers each pull, my reason stating my ECU learing was just a guess, and def possible with ur tranny fluid warming up. and i'm sure there are plenty of other reasons.
Either way, my goal is to have a good comparison on how much of a difference the MREV kit will make. So, as long as i go to the same dyno, in similar weather conditions, or, i can use teh SAE corrrection factor with my first dyno numbers, and the ones i do sometime early next year, and compare them that way. Its just good to see pretty consistent numbers with each pull, (just a slight increase each pull). But still parallel with each other.

 

^^Exactly^^
Each type of dyno has it's own merits. Just use the same dyno for comparison's purposes.

 

Your torque curves are really flat. Did you accelerate until the tach said 7k or did you let the ecu cut fuel at the top? Those numbers are a lot better than mine on the dynojet in 4th gear. You should be happy with the mrev.

 

Thanks for your info. Looking forward to your MREV numbers.

 

I'm not sure of the whether it was done until the fuel was cut off. The guy there who was doign the setup was the actual one who was stepping on the gas. Do u have an 05 6mt sedan as well?

 

yes i do.

 

IF this is still alive. . .i will be dyno'ing my 05 sedan with the MREV kit. . .so i'll be posting up results later today. . .

 

Looking forward to your new dyno data.

 

OK. . .numbers r in. . .though, there is a disclaimer. The guy who did my setup last time quit, so i had different guys workign the dyno. Though, that shouldn't make much of a difference. Only difference was it was done in 3rd gear instead of 4th, and ambient temperature was around 60 instead of 40ish last time. THe mrev pretty much did what it said it would do. . .even though i was hoping for slightly more. Understand this, this type of dyno measures power to the ground, not to teh crank or the wheels. . .so SAE correction is irrelevant. it will give you the true #s. ( http://www.enginelogics.com/dynod.html for a great explanation). No way to discredit other types of dynos. Attached are 2 sheets. . .one iwth teh HP and Trq curves comparo between my last run and current run. . .red beign current, blue being past (no mrev). Second sheet is my present trq/hp curves representing what i would have gotten using a regular dynojet with sae correction. . .what we all see in car magazines and shiz.
Quick Observations:
1. As MREV claims, mid range punch increase.s . showing a rather consistent gain in HP and trq all the way up to 6000RPM, where both drop slightly afterwards.
2. Max hp gain was from 4350 to 5700 rpm, being aabout 14 hp, and max trq gain at about 18 ftlbs.
3. 6000 rpm was the point where power dipped below my past run, 6 hp and 4 ft-lb trq.
4. Another 05 G35 sedan was there, SHRTX, also with mrev, but also stillen cai and exhaust. His #s were slightly different, being higher and seems more consistent. My runs didnt' seem as clean/consistent as my last run, for whatever reasons. And i wish i coudl do it again, cause i think they rushed setting up.
5. the sheet with what i would have gotten on a dynojet are of course higher, and seem more pleasant. But not a real representation of what i actually output on the road.

So, overall, this is a comparison of what mrev did to my car, not so much looking for my max HP /Trq output and comparing with everyone else, since we will probably have used different type dynos and methods. So, i am satisfied with my gains. Though, taht cai and exhuast aren't sounding too bad now. . .