The Law

iTrader: (39)

Hey guys, I finally dynoed the max and got it tuned. However, the numbers are terrible and I don't know the reasons why. The guy who tuned my car was confused as to why my numbers were low as well. Help me guys......I don't know why I'm getting this bad of a number. I tuned with a VAFCII.

Forgot to mention that this is a 2nd gear runs so maybe that is why my numbers are low?

Highest HP/TQ was : 217HP/186TQ

My mods are:
HS Headers
Test Pipe
3" cattman
SSIM
LRMAF
Manifold Spacers

Rhyno02

iTrader: (12)

What gear did you use to dyno? What kind of dyno was used?

I'm curious about this too since Ill have almost the same mods just no LRMAF.

tedo007

iTrader: (6)

Law, I had mine dyno which I shouldn't of picked the day. It was 105 outside. Car put down 230HP 230TQ. I got same mods. I thought only my car is being weird.

Rhyno02

iTrader: (12)

Nevermind about the kind of dyno, saw it was a dynojet, stupid phone. It look like the stock rev-limiter or SSIM, whichever way you want to look at it, is killing you bc the curve is still climbing at 6.5k.

HotshotVQ35

iTrader: (5)

you should be closer to 260..wtf

FlawleZ

iTrader: (1)

Your torque is about 50lbs off. I'd question the dyno's load settings. Do you have an exhaust leak anywhere? I just don't understand why your torque would drop off so drastically like that from 5K to 5.5K.

Rods03Max619

iTrader: (5)

DAMN that is crazy but im no expert on a Dyno you got to wait for Nmex or one of those guys.....but do you be burning any oil and did you do it with the 19s on your car or some different wheels...and if you know the weight of the wheels and tire....but me no expert....

NmexMAX

iTrader: (22)

Doesn't matter the temp or RH, that's what the correction factor is for. (CF).

This is a dynojet, so no load settings.

Looks like a 3rd gear run. Law, do you have the runfiles, if not, try and get them, they would be useful.

What's interesting/cool about the curve is that the hp peaks at 6.5k.

What gear was this? 2nd gear will give very low torque readings, and well, as we all know the equation, will result in lower hp numbers also.

AFR also looks a bit thick.

The Law

iTrader: (39)

I think this was a 2nd gear run.....so maybe that's why. What gear do you run with Nmex? 3rd? Cause I don't know how to do a 3rd gear run as most of the time I see people doing 2nd gear runs. If 3rd gear runs are the case then I will get it redone.

No, I don't have the runfiles. I can try to get them but they are like maybe a few months back. I might just try with a new dyno run again but this time with 3rd gear as long as I know how to do a dyno run in 3rd gear.

The Law

iTrader: (39)

No, I'm not burning any oil. And I did run with my 19s; however, my 19s are lightweight rims so they won't affect the results too much since they still have a lot of weight difference between the stock 17s and 19s.

NmexMAX

iTrader: (22)

Wheels shouldn't have much to do with it.

Yeah, take it to about 70 MPH and then stab it.

Any SES codes? And lean it out a bit.

Ge the runfiles too.

After looking at it a bit, it is a 3rd gear run. No way can the operator stab it @ 3000 and it not downshift.

The Law

iTrader: (39)

Ah I see. I do have SES codes but it is for the rear o2. I think right now I'm at around 13.5 afr.

This was a 2nd gear run, I think. But I will have a 3rd gear dyno run but this time I know what to tell them, haha!

NmexMAX

iTrader: (22)

For sure get the runfiles. have them email them to you now!

Anyway, here's a comparison of my 2nd & 3rd gear runs.


Same day, same AFR.




BTW,

http://forums.maxima.org/4996439-post4.html

ajcool2

iTrader: (43)

^Well there you go. Wrong gear. In for new numbers.

NmexMAX

iTrader: (22)

Also, what intake are you running on that thing?

The Law

iTrader: (39)

I'm running a short ram with JWT filter

aackshun

iTrader: (3)

Just because the 19s are light, doesn't mean it takes less energy to move them, than your 17s. Ahhh the wonders of physics....

If it wasn't summer, I'd have this all calculated for ya'

NmexMAX

iTrader: (22)

Rotating mass. Still though he needs to do it in 3rd thats the main point.

Rods03Max619

iTrader: (5)

I saw your 2nd and 3rd gear pull and you gained 12hp and 12tq, but I know it will be different for cars but if he got the same it would be 229hp and 198tq would that sound right for the mods, but every car is different....dyno and whats better in your opinion a dynojet or a mustang dyno....

HotshotVQ35

iTrader: (5)

dont forget about the dyno dynamics and the dynapack...

Rods03Max619

iTrader: (5)

Well I hear those read more higher.....and plus none near me....and some say Dynojet is the Industry Standard but then here the Mustang and the Dynojet are the Heartbreaker....

HotshotVQ35

iTrader: (5)

i agree with the dynojet being the industry standard, but the dyno dynamics is the heartbreaker..i know

tedo007

iTrader: (6)

Dyno is all about tune the car for the safest and fastest. So which dyno is better has nothing to do with the how much different result in HP or TQ it will show.

036mtmax

iTrader: (11)

I ran mine on a mustang dyno a week ago and im taking it to a dynojet wednesday just to see if there is a hp difference or not and how much.And because i didn't really get any usefull info from the mustang dyno like good runfiles.All i got was max hp/tq at what rpm and a cheesy little graph you could barely read.I want the runfiles to see if theres any sack i can squeeze out of it with a tune.

Rods03Max619

iTrader: (5)

I know that but its about which is reading more accurate and they say Dyno Dynamics reads more higher than most...

HotshotVQ35

iTrader: (5)

lol...i dont know where you are getting this info from but you are 100% wrong. like i said earliers, the dyno dynamics is the heart breaking dyno...


http://forums.evolutionm.net/vendor-...s-dynojet.html

NmexMAX

iTrader: (22)

I'm not even going to try.

Rods03Max619

iTrader: (5)

Seen it but some say yeah Heartbreaker but some say reading low guess its all on the owner of the dyno and how they set it up....

NmexMAX

iTrader: (22)

Dyno Dynamics/Mustang Anything load based depend on how they're set up. They can be set up to read anything pretty much.

A 6th gen went on a Mustang and hit 260, got on a DJ and hit 234. And of course, we've seen it break hearts where someone got 230 on a DJ, and got 190 on a load based.

DD's/Mustang Dynos are load based and need to be set up correctly in order to read correctly, and either way, they are apples to oranges.

IMO, load based dynos are best for correct tuning since they apply load according to speed, whereas a DJ just calculates the time it takes to accelerate a drum.

But this is why load based dynos need to be set up properly and parameters need to be taken into account (coefficient of drag, weight, most namely.) Cd has a lot to do with the front end of the car, aerodynamics, surface area, etc.

ajcool2

iTrader: (43)

So I started typing this long reply and realized Im basically saying the samething Nmexmax is saying above me. I just want to add that load based=better for tuning and Dynojet = better for comparing.

Grand_hustle17

iTrader: (22)

why 2nd gear???.... car is also running rich.. lean it out some and dyno in the correct gear n see if there is any difference

Shift_Max

iTrader: (18)

any updates?