Also posted in Sedan section, sorry for the duplicate--I don't know where this ideally belongs.

My scanner is on the fritz, so it will be later this evening before I can put up the graphs, but I just got back from dynoing my 6MT Sedan on a DynoJet at a nearby shop (in Durham, NC).

My only drivetrain modifications from stock are the Vortech supercharger and a Stillen exhaust.

I did three pulls, one each in 3rd, 4th, and 5th gear. They let me "drive" the car, so it was pretty fun (although I did get a bit scared in 5th gear when the speedometer read 136 MPH). I ran the car up to about 6350 rpms on each run.

The SAE corrected 5th gear dyno results were: 355 WHP, 306 ft-lb torque. Uncorrected HP (just for gee whiz purposes) was 367 or something like that.

I'm pretty stoked about those numbers. They are within a few HP and a couple of foot-pounds of torque of Dollar99's 6MT coupe, which has a Borla exhaust and a Vortech kit that was installed and tuned at the same place as mine.

But what I'm most happy about is that the torque curve is extremely flat, the HP curve is very smooth, and the A/F ratio hovers right at 12.0 even in the 5th gear pull. In fact, the guy who owns the shop remarked that the graphs looked fabulous and safe. With the timing retard programmed into the Vortech kit at upper RPMs, I'm hoping (fingers crossed) that this is going to be as safe and reliable as forced induction can be.

Incidentally, my buddy who has a 350z with the ATI kit was over there at the same time doing tuning. He has the AFC II, the J&S timing retard box, a gawdawful-loud true dual exhaust, test pipes, and custom headers. His peak HP measurement done right after mine was 370 whp, but his HP and A/F graphs looked really scary above 5500 rpms. I'm sure once he gets it tuned it will smooth out and be safe, but until then I'll trade 15 horsepower for peace of mind any day.

Full dyno shots later--sorry again that I don't have them.

--Steve

 

 

Awesome. 1/4 mile timeslips yet?

 

Nope. I need to learn how to launch first or I'll embarrass G35 owners everywhere. There's a nearby track that opens back up during the week once it warms up.

--Steve

 

Zimbo, those are some great numbers. Some good proof that makes your investment worth it. You still have the stock LSD on right? I wonder how it's gonna perform and hold up when you go to the track. Wonder how hard of a launch it can take before going kablooey, not that I want you or anyone to find out the hard way. =)

04' G35S 6MT Ivory Pearl, Willow, Premium

 

Currently, I have the stock LSD and clutch. The clutch is something I'll definitely replace sooner or later. No current plans for LSD--but it could happen

 

I have to agree, that is one great looking curve!

 

Very nice results...what is this, about +125 rhwp over stock? Impressive!

How's it run on the street? I have a 100% bone stock '04 sedan 6MT with 1800 miles on it so far. I get a lot of wheel hop if the tires spin from a dead stop on launch. Does yours hop badly when the rear tires let go?



'04 G35 6MT Sedan
Diamond Graphite

 

I don't drop the clutch from a stop very often, but if i did then wheel hop would be a problem. I have 235/45/18s on the car but it's not enough to prevent it, obviously.

--Steve