Brett

Well after the nightmare it is all over. Thanks to Tim for sending out the allen bolts I needed. I have my car back together and I ran over to the local race shop for a few dyno runs. I did 3 pulls at 18psi. and after I got used to how the dyno reacted with the car my best run was the third run even though my intercooler and intake were badly heat soaked. Here are the results of the third run me in Red and a 911 C2 in blue as an overlay. The 911 C2 also had intake and exhaust. Note the run conditions between the two cars and this is at 6200 feet above sea level.

Brett

C'mon guys what do you think about the numbers?

badass951

I do not know much of anything about dyno sheets yet, but that is quite a bit of torque for 267 rwhp! Do you have a chart at all for boost? I am just curious to see it if you do.

I am sure it has been asked already, but who is that chica in your avitar??? Gorgeous!

dand86951

Brett, the torque is pretty awesome except that it seems to fall off more than it should. When you look at your AFR curve it seems to go rich just when your torque curve starts to fall. I would think geting it leaned out a bit above 4200rpm would get you a solid 280 or 290rwhp.

Laust Pedersen

Also, the boost comes on a bit late (assuming std. turbo) even in 3rd gear. Adding fuel below 4000 rpm to about 13 AFR should help on this.

tazman

What boost level are you running? I think you need to work on your fuel curve a lot! You can verify Danno since you have his MAP kit but my understanding is your fuel curve should look closer to the 911's.

streckfu's

Your torque drops like mad. You shouldn't lose that much.

Not to mention your HP drops as well. The torque should taper off less dramatically while the Hp curve slows to a plateau.

What turbo is this and what other mods?

Jake951

I'd like to see a boost curve, too, because I'll bet it's falling off sharply on the high end. That would explain why your torque falls off so sharply from the peak. It would also explain why your A/F is so rich on the top end. The chips are probably mapped for close to a flat boost curve, so at low boost you are getting too much fuel. A flatter torque curve would allow you to make more hp on the high end.

Brett

Thanks for the info guys. The turbo is the stock k26/6. And I am running 18 psi but it spikes to 20 around the peak and falls to around 13 from 5k on. I will try to take a little fuel out in the high rpms and add a little in the lower. Sorry I dont have a boost curve so my explanation will have to do.
All mods are in my sig. Oh yeah that is Anna Kournikova in the avatar.

eclou

The torque is simply amazing. I cannot believe the K26 could do that. I wonder if it is the 3" downpipe?

Brett

yeah the torque is awesome. The second pull showed 320 ftlbs. And 340 on the third. I need to get an electronic boost controller to help with the boost dive after 4500rpm. Also I havent messed with my fuel curve at all yet since I just got the link tuner in the car, but I think there is some more hp to gain

Magown

I wonder how hot the air temps are at 20psi. Tazzman, have you datalogged any high boost runs on your K26/8?

p0wp0w

wow very very impressive.
I just dyno'ed my car last week but havn't had a chance to scan it yet. I basically have the same mods minus the SFR Downpipe and testpipe. I have the stock downpipe and Bursch 2.5" testpipe and I got nowhere near those numbers even after tuning.

@ 90+degree weather I managed 258.9 hp and 304 ft-lbs torque on the stock K26/6...nothing compared to yours! very awesome, time to do more tuning

MildMax951

Brett I think it's time to consider altitude (6200 ft). You are losing a full 3psi
to altitude.

If your boost figures were taken from an aftermarket gauge in your car then the 13 psi from 5k on is actually 10 psi absolute( in simple terms you running 13 psi guage at 6200ft and a guy running 10 psi guage at sea level
have the same absloute manifold pressure)

You are using a Tial wg so that shouldn't be a problem, there have been doubts expressed on this forum as to what boost a k26/6 can produce at high altitude especially if it's a little tired.

I'm at 5000 ft and I also get a tremendous torque drop off at higher revs, Tial will be fitted on Monday, I expect it to help some but have a suspicion that I will still have some drop off compared to a sea level car of the same spec.

tazman

The highest boost I am planning to run at this time is 18psi. I have tons of data logs at that boost level. My normal run is usually a third gear pull and the temps I quote are after the intercooler. If the temp before I start the run is much below 20 C I see a 10 C rise, at 20 C up to around 35 C I see a 15 C rise.

I do have a log of a multiple gear run against a Mustang Cobra that I will post a pic of. When I ran him I was in the middle of data logging and shifted way to late from what I should have because of the drop in power our cars have at high rpm but my mind was set on data logging and I would have still lost anyway.