emax02

iTrader: (1)

I will try to get the sheets scanned tomarrow. Heres the #'s. BTW this is before the headers go on}.

Peak HP is 171.7 & Max TQ is 179.4.
The temp was 81.8 F, 29.66-0.44in.Hg, CF=1.01, Alltitude+'s 470ft.

My peak TQ was at 3.3RPM & my Peak HP was at 5.4RPM. It held the peak HP until 5.8 RPM.

Heres my setup so far, 1995 Maxima, 5spd, 98K miles, Stillen Intake, RT cat, Stillen Catback, I also have a Alluminum Flywheel and a Centerforce Clutch. So tell me how do these #'s look to you? Are they any good for what I have?
Also what does a stock 5spd 95 maxima put down to the wheels? Thanks

La Jolla Max

If that's with the stock exhaust manifolds and stock y pipe, I'd say its pretty damn good

LoveSick

Your setup should be good for 175hp. But your torque looks high in comparison. So I think your mods gave more torque than hp.


where is the header?

PhatGuy

Was the Y-pipe on this dyno stock or aftermarket?

Good luck I really hope there are some gains 20hp+ to the wheels would be sweet!

You da man for throwing down on this whole project!

emax02

iTrader: (1)

I have a Nissan oem Stock Y-Pipe on the max. My car also needs a tuneup pretty bad becuase I am running 3 ungaped Denzo iridium plugs and 3 NGK plugs{long story} with about 50K on them. I will do a tuneup after I dyno the headers. Give my max a month and I will have 200FWHP after my headers, UDP & GForce ecu, Just wait and see! Muahaha.

La Jolla Max

That's impressive. you'll easily break into 200fwhp (especially since the ECU alone yields about 17hp )

emax02

iTrader: (1)

I will be doing a dyno of the ecu too . I just have to wait for Cheston to give me the go ahead. My UDP should be in any day but I will not install it until after I dyno the headers.

PhatGuy

Your car is going to be sick fast for an NA Max once all this is done!

doz

emax95, when do you expect to do the dyno with the headers installed?

Screaminfast

iTrader: (1)

I just ran my car at the dyno yesterday....I have very similar mods to you, Ethan....

Here are my numbers:

172.4 HP and 177.5 TQ

But apparently the graph says... 172.9 and 179.1

Data:
Absolute barometric pressure : 29.75 in.Hg.
Vapor pressure : 0.62 in.Hg.
Intake air temperature : 92.3 °F
Gear Ratio : 50.54 RPM/MPH
Correction Factor : 1.04 STD



So, we're about the same...

dmbmaxima2k2

iTrader: (1)

i don't feel so bad about my dyno anymore. i think my numbers are a little low but i only did ONE n/a run. i think i could have got 160hp+ if i did three plus it was hot out and i just got done dragging.

La Jolla Max

Yea, but emax dynoed with the stock y pipe

dmbmaxima2k2

iTrader: (1)

ya, that's why after seeing screamingfast's i'm not so mad about my ONE n/a pass in a hot car on a hot day.

emax02

iTrader: (1)

Yep are #'s are about the same but you have a Y-Pipe I don't . If I had a Y-Pipe to my car whould definatly puting down atleast 180. I can't wait until I get these headers dynoed on either Friday or Monday!

Screaminfast

iTrader: (1)

You also have to take into account, that my exhaust is kinda ****ed up, it was 10 degress hotter on mine....plus i thought I would have run higher than that myself

I dunno, now I am sad...

emax02

iTrader: (1)

I'm sorry I made you sad.. Whats the matter with your exaust? BTW I noticed you wrote down Intake air temperature 92.3? Does that meen it was 92.3 F outside or that your intake was 92.3? I am curius, BTW I think 95's put down the most power for all the 4th gens .


I forgot to mention I did my runs in 3rd gear.

Screaminfast

iTrader: (1)

I did my runs is 4th gear...Is that bad? Also, I think the 92.3 is the ambient Air temp.....My ypipe has no flex its really old, and I think it leaks, because of my severe beez problem... Also I have 18s, does that make a diff?

emax02

iTrader: (1)

Ahh.. I am 99% sure that people always run there max in 3rd gear. I did two run's in 3rd and one in 4th. The run I did in 4th was right after my 1st 2 runs so I whould amagine my car did heat and lost alittle power, anyways my car made 167.6 HP and 177.1 TQ in 4th.

If you ran your car in 3rd you probably whould have picked up a couple extra HP, maybe 2-4. Does that make you feel better?

Dave B

Hmmmm.....why does my car make so much more torque than you guys?

With an HKS intake, y-pipe, b-pipe, and RT cat, I made 176fwhp and 194 fwtq. The correction factor was .99, altitude is 890', and the run was in 4th gear. The two pulls were within 1hp and tq of each other. Over 180fwtq torque is available from 3100-5100rpms with peak torque occuring at 4100rpms.

2 months later on the same dyno with the Poorman's intake and the same mods, I made 174fwhp and 193fwtq. With a CF of .99 and 4th gear. Same torque curve as before.

My dyno shop says that 4th is the ideal gear to dyno since it's the closest to a 1:1 ratio. We tried 3rd for fun and got 179fwhp and 197fwtq, but he stressed this wasn't realistic. Every single other car I've witnessed on the dyno are run in 4th (Mustangs, Hondas, F-Bodies, DSMs, SVT Contour, 240SXs, Probe GTs, etc). I rarely hear of shops intentionally using 3rd. However, if they used 3rd the 1st time, continue to use 3rd.


Dave

emax02

iTrader: (1)

Maybe your Y-Pipe and UDP added 15 TQ? I awlays thought that max's ran in 3rd gear? When I put the headers on I will do one pull in 3rd and one in 4th{just like today}. Hmm..

Confused

iTrader: (4)

http://www.speakeasy.org/~celbrett/d...701/dyno1.html

emax02

iTrader: (1)

Thats weird you only got 4 more HP then me with the addition of a Y-Pipe and UDP?

theblue

all this talk makes me want to dyno my car... I'm guessing I'm slightly higher than most becuase of my 1/4 times... I want a 14.4 once the y-pipe is on my car.. yeah it may not happen, but who said I would get a 14.7 without it.

sx7r

iTrader: (15)

wonder what i would have got if i dyno'd in 3rd gear.

Dave B

Confused:
Your dyno plots look exactly like mine except I'm making slightly more power and my runs were in 4th. BTW, those wheels are so beautiful.

Emax:
You're only making 4fwhp less than Confused, but he is making over 10fwtq more which is pretty significant. It seems that the Y-pipe tends to make more tq than hp. I think the headers will do the same. TQ is what gets you off the line hard which is very important in these cars.

theBlue:
You're Max might be a little stronger than others or it may not be. It's nearly impossible to judge your car's performance unless we had a bunch of Maxima's in your area that could run at your track and on your dyno. Your 14.7 is really incredible for just an intake and exhaust, but I know of 3 4th gen Maximas in Texas that did 14.6s with just intakes. A better indicator of power is trap speed. It seems that your trap speed hovers in the 91-92mph range where as some y-pipe equipped 4th gens are hitting 94-96mph. They clearly have more power, but it's much harder to put the power down with the added tq and hp. Once you get you Y-pipe, you'll see what I mean


Dave

dmbmaxima2k2

iTrader: (1)

then we would all be even more jealous. What do you have for an exhaust now. i'm looking to get something very similiar when i go to my 100shot real soon. I gutted my cat but that creates internal turbulence in side. maybe if i could crack the cat open and weld it around a 2.5" piece of pipe???

sx7r

iTrader: (15)

3" SS y-pipe, gutted stock cat, 3" mandrel bent piping all the way back, no resonator, no muffler. you could get a test pipe made for about $40 - that's the going rate around here for a pipe.

dmbmaxima2k2

iTrader: (1)

that's what i was think of doing, i already gutted my stock cat, you don't think this cause internal turbulence inside and resticts flow?? I might only go 2.5", your car has so much power and i already have the 2.5" y and might get the headers. i'm gonna try a two piece design with no muffler so i can just swap out the pieces if it's too loud.