Also, aren't correction factors supposed to be DYNAMIC based on weather, altitude, etc.....

Did you get that correction factor from a shop in AZ high up on a plateau?

If its a dyno dynamics dyno, have it read like a dyno dynamics dyno...

Mustang dynos read low, and I don't know a single shop around here with a MD that corrects it to look like dynojet numbers...

 

I dynoed with my SC at CP racing and put down 367RWHP. Prior to this, I had the 3.33 pulley and put down roughly 340RWHP. So adding the 3.12 pulley and having CP Racing retune and dyno on th DD dyno, I added about 27RWHP or so. This sounds about accurate to me?

Eric/Sharif, keep up the great work!

 

No offense Zach, but your track numbers don't exactly scream 367whp. Alberto is trapping higher than you N/A with just some bolt ons at 260whp though he is a 6spd and will always trap higher. Maybe its altitude or conditions but your numbers don't exactly scream 360+....

And don't get me wrong Sharif has been the most helpful and knowledgable person I'm not knocking him in the least. I'm saying CP Racing's numbers are inflated....

 

Nice mods and great numbers. It will be interesting to see some time slips later.

 

 

lets hope ive seen 4cyl hondas make over 300hp so no reason a Z cannot a motor is just a pump

 

MRC and Phunk. I wish you would show a little more professional courtesy and respect to your fellow vendors.

Lets get a couple of things clarified here. We have been working on this same dyno, and same car, for numerous dyno sessions. When we started tuning his car, he had about 250whp (most of the basic bolt-ons), and since then, he added pulleys, the EU tune, and achieved 276whp. This was about 8 weeks ago. With the addition of the Crawford headers, and test pipes, I was as shock as you are...but 314whp was the best number we acheived. First pull without tuning waws 290whp, and with the AF finally set to 12.0:1 we saw 314whp.

Have you guys ever been to a 350z DynoDay? I have seen bone stock 350Z's dyno betwen 225whp and 250whp on the same dyno, the same day. There are going to variations between cars. Chad has a strong car from the factory.

Now lets talk about correction factors. If you contact DynoDynamics corporate office (and MRC will find this out too...becuase they are buying a DD), they will tell you that UNCORRECTED, the DD reads 13-17% lower than dynojet. Many shops will correct the number, and CP chose 13% correction which is on the convservative side. When we run a bone stock 350Z on the DD dyno, without correction, we usually get about 200whp!!!

Before you both start bashing the dyno, you might take some time to actually USE a DynoDynamics dyno, becuase neither of you have a clue on how to use or operate them.

It is really sad, that both of you are disputing every dyno that we've posted. Just prior to Chad's NA car, we tuned Nick's TN car to 407whp at 9.5psi TN kit. That is a perfectly "normal" number. This dyno generates an industry standard number, and is consistent from run to run.

And MRC, will you also pay me $75 if I take my car over to the DynoJet for comparison purposes? My last dyno was 590whp on pump gas at 15.5psi. At this point, I have tuned about 75-80 VQ35's, so I think I know I thing or two about tuning them.

 

That was my Z with the Turbonetics. I don't see how they could've inflated any of the numbers??? Are you guys saying that my Z with The Turbonetics kit, 440cc injectors, AAM complete fuel return system with Walboro fuel pump, Greddy E-manage Ultimate, Blitz boost controller, JWT flywheel, Modified Borla exhaust, Motordyne 3/8" plenum spacer, UR 3 piece pully set, and NGK plugs did not dyno @ 407rwhp??? I would think these numbers are pretty accurate considering the Turbonetics kit puts out in the 370-380rwhp range without any other mods. Please correct me if I am wrong.

I think those are great numbers for the NA Z and can't wait to see the dyno Wednesday.

 

Shariff, relax, no one was bashing you.We were simply curious as to his abnormally high dyno reading, but while we are on the topic lets talk about it.
Your car made 622 whp on 550cc injectors, way past their industry standard duty cycle.I am just curious as to your method of correction factor as I too will be utilizing the Dyno Dynamics dyno..I am also curious as to why you have been the only one to date to achieve such a high HP # on a 550cc injector, and I am curious to see what your A/F and fuel pressure were set at. to make 622 whp you are at 715 Crank HP according to industry standard drive train loss of 15%.This would mean you would need to utilize a 750cc injector to safely reach your HP claims. Yet you achieved this on 200cc smaller injectors as to what the industry standard should be. I am just curious as to if there were some correction factor mistakes on the Dyno Dynamics calibration..I know I dyno 445whp non corrected on a Dyno Dynamics, correct this up 13% like eric said and it puts me at 501whp on pump gas.This is more inline with what I see on a Dyno jet of 490whp.. I just wanted some clarification on HOW exactly you come up with your corrected numbers, thats all...no bashing or hostility on my end..

 

Is it Wednesday yet??

Awesome (prelim) numbers G.

 

Thanks Julian, I was trying to be harsh myself, but your comments came across that way. All is good.

550cc injectors, running "non-industry" standard 75 psi of fuel pressure is how we did it.

Also recognize that the 622whp number was using a 100 octane mix, and 16.5psi of boost pressure. My motor also has cams, head work, and a 3 inch exhuast. AF on this run was low 12's across the board. I have seen some posts where 15psi generated between 450whp to 650whp. The reason being, are in the stratgies used in building and tuning the cars. As you gain more experience in this, you will learn some of the strategies that allow us to get high power output, with lower boost pressure, which took as months and months of trial and error on the VQ35.

Subsequent to the 622whp run with 550cc injectors, we did additional tuning with the 650 cc injectors at even lower boost pressure, and low 11's AF and generated 590whp at 15.5psi.

Lastly, take the "recommended" injector size charts with a huge grain of salt. They make some pretty generic and conservative assumptions in terms of BSFM (brake specific fuel consumption), duty cycles, and fuel pressure. If I followed their recommendations, I would need a 925cc injector to acheive 600whp!! And they also assume 43.5psi of differential fuel pressure.

With all due respect, we're not new to this. CPR and I have been tuning these cars for 2 years, and they require VERY different tuning strategies when compared to Hondas, DSM's, etc..etc.

If I get some time today, I will head over to DJ myself.

 

Cool, as long as were on the same page...I was just questioning the correction factors.I would love to see his car put down over 300whp on a dynojet..What alot of people dont under stand is that dyno #'s dont mean squat, they are simply estimates of HP and all dyno's differ in their readings..The one thing we usually like to use as a basis of knowing how much HP a car is putting out, is it's trap speed on a 1/4 mile..This allows you to take the vehicles weight into account and estimate how much HP the car is making...When I take my 126mph trap speed and do the calculations, my car is making 500hp, which is dead on where we have been on our Dyno's.So it is all relavant in a way, cause if you were to shave off weight on a vehicle, it would not show up on a dyno, but it would show on your trap speed..

 

Nice dyno-interesting to see what numbers are put down on wed. subscribing to this thread so I don't miss the results.

 

The correction factors on this dyno have always been 13%...since the first day CPR took delivery of it. Consistency is the key. We began tuning the car at 250whp and now it puts down 314whp. Regardless of the numbers, the net gain is noteworthy.

 

Yes the gain is very noteworthy. I may have to take my car into you guys for a tune once all my mods are in. Have you guys tuned any REV-UP 06's yet with good results?

 

Sharif,

Can you guys please come on over to Dubai and tune our Z's! hahahahahahahahaha. I am sure we can all make it worth ya while. Oh and bring that dyno machine.

 

subscribed want to see the #'s in a couple of days...

BTW either way those are definitely impressive gains for the mods...
how does the A/f look with this NA tune?

 

Just FI based Rev up motors. 7-8psi, generated about 400-420whp.


Certainly!

 

12.0:-12.3:1 across the board after 3000rpm to redline.

 

Interesting, lets see what the 2nd dyno #'s show.