superjet.1

The test car is running quite well and making real good hp. With a stock engine and turbo a stage two GURU MAP KIT and test pipe were making on pump gas 290 rwhp at 15 psi and shooting for 300 rwhp.Just wondering has anyone made 300 rwhp at 15 psi with a stock engine? Or should we set or goals higher ?

Turbo Fanatic

Awesome! What did you guys end up with on peak torque? Was it better than the 303 foot pounds with previous runs ?How did you get the added HP? Better A/F ratio? Later version chips? Wastegate control? Keep it up the great work!Any Dyno charts to post?


James

SoloRacer

Good luck. I find it doubtfull that you will come close to 300 rwhp with a stock k26/6 turbo and a stock engine. Sorry. I just dyno'd my 1989 951 with a fresh engine, k27/8 turbo, Tial 46 mm wastegate, Bursche Cat-Back Exhaust, APE Chips, Greddy Profec B boost controller and got around 280 rwhp and 306 lb-ft of torque. This was at 15 lbs of boost. My dyno sheet is as follows:



I would suspect that you would be lucky to get 250 rwhp with a stock k26/6 at 15 lbs.

adrial

They already have dyno sheets up showing 260 RWHP and 300lb/ft of torque with their stage 1 kit.

Now, it seems they are up to 290RWHP with the stage 2. Can't wait to see the dyno sheet for that one.

fc-racer

Just a basic chip with the right boost controller will give you 270hp and 300ft-lb torque to the wheels at 15psi. I bet I can squeeze even more HP out if I put on a better wastegate as the boost bleeds and hurts the top end HP number.

This was on a stock 89 951 with K26-8 and factory exhaust, filter, etc.

fc-racer

special tool

Solo racer - are you still using a vane meter?

toddk911

Solo, I assume that red line is your a/f curve. If you clean that up, you would be making a lot more hp.

toddk911

Travis, you and Danno still staying busy???

Question, I notice your 0-60 is 5.1, but your 1/4 is 13.8??? If you got the "bad off the line 951" down to 5.1 0-60, I would have expected a 1/4 in the low 13's.

Russ Murphy

[quote] Just a basic chip with the right boost controller will give you 270hp and 300ft-lb torque to the wheels at 15psi. <hr></blockquote>

I'd like to see the dynograph with boost graphed for that one. Not that I'm doubting the veracity of the statement.

Steve Lavigne

[quote]Originally posted by Russ Murphy:
<strong>I'd like to see the dynograph with boost graphed for that one. Not that I'm doubting the veracity of the statement. </strong><hr></blockquote>

I'm in the same boat with my K26/8 on my '86 951. It's all stock execept chips, an lbe, and "upgrade" to a rebuilt K26/8. The dynojet corrected peak hp number is 269 (was 273 uncorrected on cool Seattle day) and peak torque was something like 295. Air/fuel is off, with it being rich down low and lean up top.

Russ Murphy

Thanks Steve. I guess I overlooked the K26/8 part of the equation, but the question about the actual boost stands. How do you know it never exceeded 15 psi. It's not like we don't experience substantial boost spikes with LBE's. Add to that funky factory boost guages that some of us have (mine is actually spot on compared to the SDS MAP readout). <img src="graemlins/beerchug.gif" border="0" alt="[cheers]" />

Ski

Solo,,what kind of dyno,,Mustang or Dynojet?

Travis, when are you going to get pics up of the Stage 2 kit? How about some pics too of how you hook up the LINK box. I know your not a fan of vampire clips so what are you using?

fc-racer

[quote]Originally posted by Russ Murphy:
<strong>

I'd like to see the dynograph with boost graphed for that one. Not that I'm doubting the veracity of the statement. </strong><hr></blockquote>

Go to <a href="http://www.novustelecom.net/~fkassam/dyno/dyno.html" target="_blank">http://www.novustelecom.net/~fkassam/dyno/dyno.html</a> and click on Steve R, 14.5psi. You will see 262hp and 291ft-lb torque. This was on a bone stock 89 951 with no other changes except for the chip and a manual boost controller.

After that dyno session, we worked on keeping the boost up at higher rpm's. We changed the factory air cutoff valve (compressor bypass valve) to one from a Mitsubishi Eclipse which is constructed much better (this was before Forge had theirs) and picked up 2psi in the top end. A subsequent dyno pull showed over 270hp and 300ft-lb torque at the wheels. With a better wastegate, I think we could push into the 280 range with the same torque. Having said that, the Guru unit does it without any additional bypass valves, etc. so I could imagine that they could break into the 300's with the same mods we had. The factory bypass valve truly is junk.

As for you second question of how we know what the boost was at. I have a racecar that runs at 1.7bar boost, that's 25psi. To run that level of boost, you need a super accurate gauge so I have an Autometer fluid dampened gauge that I use for testing. I actually videotaped the boost gauge during the runs so that I could reference it back against RPM in the future (the dyno didn't have the input for boost back then). Now, I just use the dyno input which maps boost against the HP and torque curves.

Hope this helps,
fc-racer

Turbo Fanatic

Farzaan, which version of SteveR's chips were you running? The ones for 2.5 bar fuel pressure regulator or a 3.0 bar regulator set?
Were you running with the cat converter in place or with test pipe?

Thanks,

Glad to see you posting as I think you have a great deal of experience to offer and hopefully you will be able to get your 951 back

James

christian

Farzaan:

Where do you go for dynoing your cars?
Thanks,
Christian