Dyno Results!! Tell me if these numbers look about right!

[StopTheExcuses]

Setup is SR Blacktop, Greddy Intake Manifold, GT2871R .64 trim, JWT S4 Cams and Enthalpy tune. Dyno run was on a DynoJet 248x at 18.5 PSI or so.

[cheapscheisst]

looks pretty accurate to me

[DrifterProdigy85]

Seems pretty close to the normal IMO. I always figure 375whp from the .64 and 400whp from the .86. Have any idea what AFR your running?

[StopTheExcuses]

seems pretty close the normal. have any idea what AFR your running?

Yeah, here is a before and after graph. My numbers seemed kinda low at first, and come to find out, they dynoed the car in the wrong gear, and on top of that, My timing was at 21*. So, this is the before I found out my timing was screwed runs. It should show the AFR.

[DrifterProdigy85]

Ill be dynoing my .86 tomorrow. It will give a good comparison between yours and mine. Im running Greddy Manifold, HKS 264 Step 1 Cams, and Enthalpy Tune.

[StopTheExcuses]

Ill be dynoing my .86 tomorrow. It will give a good comparison between yours and mine. Im running Greddy Manifold, HKS 264 Step 1 Cams, and Enthalpy Tune.

Yes, please let me know. I've seen two 400whp with the GT2871R.64 on "The other" Nissan enthusiast's websight and it seems my numbers are a little low. Maybe I can chalk it up to different dyno's. Do you think my lines are a little choppy? Either way, let me know what your numbers end up being. That will be a very good comparison for peak hp and spool. Thanks!

[DrifterProdigy85]

Top Graph doesnt show AFR at all.

[StopTheExcuses]

Top Graph doesnt show AFR at all.

Yeah, I left them off of the graph becuase their AFR instrument that reads was screwed up. AFR hopefully would be the same, but don't my hp and tq look a little choppy from 4K to 5K on the top dyno. The top graph was on a DynoJet 248x, and the bottom graph on a Dynojet 224x. Only other variables were 15* timing on top run and 21* on bottom.

[DrifterProdigy85]

Your lines look good. Only seem choppy cause theres no smoothing shown with the graph. The 400whp .64 are always more than they appear. The turbo has been ported and **** like that so it flows more than the traditional .64. Your in the right ballpark with your numbers. Truthfully the 2871R flows to good for the T2 housing. Swap to a T3 housing and watch power increase.

[DrifterProdigy85]

If AFR is the same as the bottom graph, id lean it out more to 11.6-11.8 AFR. You might noticed a 15whp gain by doing that.

[StopTheExcuses]

Your lines look good. Only seem choppy cause theres no smoothing shown with the graph. The 400whp .64 are always more than they appear. The turbo has been ported and **** like that so it flows more than the traditional .64. Your in the right ballpark with your numbers. Truthfully the 2871R flows to good for the T2 housing. Swap to a T3 housing and watch power increase.

Ahh, I see, that does make some sense. So, I guess I need to get an S-AFC and take it to the dyno again huh? I just want to keep it *reliable* as I can since I still have the Stock HG. What's the highest PSI you would run on one? 18? I'm looking forward to your numbers tommorow.

[DrifterProdigy85]

Ive ran 24psi on the stock headgasket with my .86 using 100 octane. I usually run around 19-20psi on 93 octane. Ill stay stock HG till it pops. My AFR is right around 11.6-11.8.

[DrifterProdigy85]

Check your fuel pressure. You can simply adjust the AFR by lowering the pressure some. My rule of thumb on fuel pressure is dont go below 40psi or above 50psi. Also you can check for boost leaks which can cause richness. SAFC adjust things as well.

[StopTheExcuses]

Ive ran 24psi on the stock headgasket with my .86 using 100 octane. I usually run around 19-20psi on 93 octane. Ill stay stock HG till it pops. My AFR is right around 11.6-11.8.

Holy **** dude! I don't feel bad about running 18 to 19 on mine anymore. They have one place near me that sells 100 Octane. I'll be taking a trip soon. About the FPR, I bought a Nismo Unit, but they sent me the wrong one, so I guess I'll order another one. 43.5PSI sound about right? Also, what is the upper limits in PSI that the .64 trim makes HP still?

[DrifterProdigy85]

Dont really know the limits of the turbo. Im thinking around 21psi. I never dynoed at 24psi so i dont know if it was a huge improvement or not. Felt like alot more power but could of just been torque. I used a mix of Cam 2 (110 octane) and 93 to get my 100 mix. You can try the Nismo at stock 43.5psi and see what AFR you run. If its lean then add some fuel pressure. If its rich then id get an SAFC to lean it out.

[exode]

Your running 740cc then? I'd like to see your dyno at about 22-25 psi with a little higher octane gas. Cool dyno though, I'd be hoping for a little bit more especially with cams =\ (i'm running a very close setup)

So enthalpy+safc? or just the ecu, i'd consider getting a safc and tuning it a little finer, and having a professional tuner do your timing and fuel as well. I bet you'd be able to get atleast 380 especially with cams.

I wouldn't be dissapointed with those results though, nice dyno either way. If you were looking to squeeze the extra 20hp though

[DJ Cool Breeze]

damn man.......very nice dyno!!!!!!!!!!!!!!

[DrifterProdigy85]

I did 355whp 306tq on a dynapak today. Ran 19psi. Power kept increasing past 7500rpm but torque dropped immediatly after 4800rpm. Im curious what a dynojet would read. Ill have a Dyno pic and Videos uploaded shortly. The power seemed uncharectoristic off how fast the car is though. The dyno pulls were done in 4th gear and went from 2500-7500rpm in a matter of 3-4 seconds.

[thekidzkid25]

bump!

[Blown240sx]

That map seems like ignition timing was messed with much. You can smooth the power band out by adjusting timing. But if your not running standalone you cant really mess with it.

Good numbers. Also 11.16 is rich you should tune it up like someone else said cause there is more power there.

[DrifterProdigy85]

Heres my Dyno runs with the .86. Torque numbers were corrected when he printed the dyno sheet out.

14psi - http://www.youtube.com/watch?v=-GW7HAgk1JI16psi and 19psi - http://www.youtube.com/watch?v=8xf9qPkq6Lg
Modified by DrifterProdigy85 at 5:40 PM 1/21/2007

[StopTheExcuses]

Heres my Dyno runs with the .86. Torque numbers were corrected when he printed the dyno sheet out.

14psi - http://www.youtube.com/watch?v=5_BwSJD7UoE16psi and 19psi - http://www.youtube.com/watch?v=8xf9qPkq6Lg

First off, we both have Champange Pignose Sr's. Sweet, second off, is the Dynapack the hub dyno? Your torque numbers look great, and your horsepower is good, but I think that you def have more horses hiding somewhere. Esp since It's the .86 trim. Do you have a Dynojet near you??

[StopTheExcuses]

Also, do you have Cams and Greddy Intake Manifold?? Hard to see what Manifold you're running from the video. Nice vids though.

[DrifterProdigy85]

Dynapack is the hub dyno. Numbers dont really make sense because i trapped 117mph in the 1/4 with 16psi a few months back which relates to 350whp. Running 19psi will trap alot higher for sure. Ive got HKS 264 STep 1 Cams and Greddy Intake Manifold. There is a dynojet near by but i didnt want to use it because i still have stock tires. They tend to spin quite a bit on the rollers so i went with the hub dyno. At this point there just dyno numbers, ill wait for the track to open again to verify.

[luv2spedup]

dude can you please tell me how to get in touch with enthalpy cause i need a rom tune by the way nice numbers
Modified by luv2spedup at 1:18 AM 1/22/2007

[DrifterProdigy85]

[email protected]

[DrifterProdigy85]

I found out why my numbers were low. Clutch was slipping. It explains the drop in torque at boost higher than 14psi.

[luv2spedup]

[email protected]

thanks dude