This post is being made in the interest of full disclosure, so that no one can claim that Richard 350z is trying to hide anything. I have been authorized by Richard to post the following message from him on this Evil Board:

"I dyno-ed this morning on the Dynojet at R&D Dyno in Gardena, Calif. I was disappointed to get 276.5 rwhp, and 250.5 lb./ft torque. It was 70 degrees at 9:30 a.m. All of the mods listed below were on my Z at the time of the dyno.

This compares to the 301 rwhp I got on the Mustang Dynomometer on Sept. 20, 2003, which was done BEFORE the Crawford Plenum, RT Hi-Flow Cats, TechnoSquare ECU Flash, and Grounding Kit were added.

I can think of four possible explanations:

1. The Mustang Dyno reads high. That is certainly what all those Richard haters in Jonestown think.

2. The Dynojet reads low.

3. Some combination of #1 and #2, so that the truth is somewhere in the middle.

4. The plenum, cats and ECU rob you of 25 rwhp. That does not seem reasonable.

I prefer to think that #3 is the most likely answer. According to my math, the 276.5 rwhp translates to at least 340 crank hp, although I am mixing apples and oranges to get there, since my baseline dyno of 233 rwhp was done on the Mustang."

 

Here are Richard's mods that are included in the above dyno.

2003 Silverstone Track 6MT - stealth look
Options: NAV/kick plates/mud guards/mats/tint
TechnoSquare ECU - custom flash
Nismo R-tune Cams
JWT Lightweight Flywheel
Crawford Plenum
JWT Popcharger Intake
Borla True Dual Exhaust
RT High-Flow Cats
Borla Headers
UR Racing Pulleys
Z-xtreme Grounding Kit
Nismo S-tune Swaybars
Crawford Strut Brace (front)
Air-bag Cut-off Switch (passenger side)

 

Number 2 is a new one for me. (Dynojets read low) It is common knowledge that mustang dynos read higher and are less accurate. Hence the low dyno figure in stock trim.

Still the same, 276 rwhp in NA form is great. That is what one of the Perforamance Nissan cars got with similar mods. I think Richard should be happy. Congrats.

 

It's definitely #1 Mustangs dyno readings vary from dyno to dyno. Sometimes by a very large percentage. Richard should be very happy with that dyno. It's an awesome improvement for an NA car with no major engine work.

 

That sounds just about right. It's about 20 hp and 7 tq more than my Z and I would attribute that primarily to the Nismo Cams and UR Pulleys and possibly a couple hp from the Borla Headers and TS ECU.

And, I agree with Jesse that the Mossy Mustang dyno is clearly the culprit of the misleading dyno results. Thanks for posting your results Richard.

 

thats what i'm hoping for....270s. remember nismo cams are kinda mild

i have similar mods, minus the crawford plenum and pullies

 

Richard 350z has authorized me to post his dyno sheet from the Dynojet run today. Here it is.

 

Still very very nice HP and in line with what everyone else here is experiencing with these mods.

Good to see the numbers up, thnx Richard!

 

That's still a 43 HP gain. I don't understand why he would be upset with that.

 

Translated to crank hp, the car makes at least 340, or a 53 crank hp increase over the 287 stock crank hp.

The cost of that improvement was about $7,000. For that amount, you could get an ATI procharger installed, and have money left over for Borla true dual exhaust. That set up will get about 350 rwhp, or maybe 430 crank hp.

Of course no engines have blown up with the N/A mods.

 

Do you have the af readings available from this run?

I don't want to believe these mild of a cam will rob any low down torque. More torque should have been had from 2500-5000.

 

Man, for someone who promised to never come back here again, "Richard" sure does seem to like it here.

 

was his car dynoed in 4th instead of 5th?
bc on that dyno sheet it says 4th on the bottom.

 

Personally your numbers for whp and torque are great, especially without forced induction.

 

The point is that Richard is an honest person. He got a dyno that he found disappointing, but posted it here anyway, after all the nasty treatment he has suffered here. Some of you really don't get it.

 

First off, I appreciate Richard allowing this to be posted on this site for us to see and his willingness to share information that he did not have to share with us. Even though Dyno information has a lot of variables it is still a great tool for fine tuning and selecting mods that make HP and torque where you want it.

That being said, I too was suprised by the torque curve and my first thought was, "I wonder what the A/F ratio looks like" The other concern is the borla headers. I have never liked their design and only wonder if they are part of the reason the low end torque is not as healthy as one would expect to see. Just a couple of thoughts. The top end gains are very nice and I bet this car sceams through the gears. Once that final drive is in, you will hit those higher RPMs so fast you will hurt yourself trying to shift fast enough.

 

I think that 270ish dyno is more realistic. The Mustang must have been way high. Only thing I dont love about R&D's Dyno sheets is they are SAE Corrected.

Jeff and I were talking about going to a different dyno place from now on. We should have taken our cars somewhere that would have done an unrealistic baseline and beyond. heh

 

Richard informed me that his Dynojet was done in 3rd and 4th gears, but NOT 5th gear. The 4th gear dyno is the one posted. It was a little higher than the 3rd gear dyno.

 

So if 4th was higher than 3rd is it safe to assume that 5th would be even higher?

 

dyno pulls should be done in 5th in a 6mt... 5th is the 1:1 ratio gearing...

I noticed R&D does the pulls in 3rd or 4th...