I spoke to them today and I'll head over there tomorrow afternoon. I believe we should be running the dyno, so who has reccomendations for the dyno. I know it should be done in third gear, but how is up-shifting prevented?
The hood will be open and I plan to rig the fan relay so I can easily swithch on the low speed!
How would tire pressure affect the run, I've been using 32psi, eventhough I know we are supposed to be at 29psi, my tires are a bit wider 215's but the side wall are high so that why I'm at 32psi.
I'll be getting gas today, and I'll only be adding a little bit of dry gas, no other additives.
Am I going to be the one on the gas during the dyno?

I'm more excited about the dyno than I am about getting a UDP

 

is it an auto? to prevent upshifting i would think turning OD off would work.

 

Yeah but keeping the od off prevents the torque lock-up convertor from engaging. So the transmission will not create 100% of the power it is given b/c of the fluid drive in the torque convertor.

 

actually, it will lock up in 3rd if you leave the OD off. notice the RPM is lower in 3rd with the OD off rather than on. that means that the TC is slipping with OD on.

as for tire pressures, just leave it there.
and don't dump "jet fuel" or anything other than your regular gas in there. don't screw with the fan relays or remove the AC belt or anything else like that.


you want the dyno numbers to be as close to "everyday" conditions as possible.


also, for a UDP to see real gains, you should use the lowest gear they'll let you run in. even if that means 2nd, then it does. you want to see a before/after comparison, not a "how is my car compared to the other VEs on the road" comparison.
does that make any sense?

your car making more power than someone else's doesn't mean squat other than you have more power. your car seeing a performance gain after the mod IS significant.
so it really doesn't matter what gear you run it in as long as it's consistent between tests.

so when you go in, just make sure your before and after conditions are the same.

 

To garble a quote from "Halfbaked" - "Damn man! Did you go to Maxima College?"

 

hmmm... I should start one, and name myself Dictator instead of President. :evil:

 

I agree with Matt. 2nd gear would give you more rpm to work with since it won't kick down at speeds over 3500rpm. However 3rd gear will give you better final #s because the TC locks in 3rd, but not in 2nd. Tell the dyno operator to take the engine to the rev limiter too.

 

Matt, I dont think that's right, with the od off the torque convertor does not lock up. It's all fluid drive.

How do I run all of third gear in an automatic (WOT) without the tranny wanting to upshift? I guess I'll either be running it in 2nd or if they say differently at the dyno shop. I know we are looking for the gain of the pulley, but I would like to know how much my engine is making as well. I totally understand that the conditions must be exactly the same for before and after runs.

I tapped into the fan relay (low speed) last night. It works really well. If they dont have two huge fans on my motor during the runs, I'll be running the engine fan. otherwise I'll just being running the fan immediatley after the dyno run. And ofcourse I will be consistent throughout these runs. Hopefully we'll do three runs, does that sound good enough?

Well I'll be leaving in an hour or so, I'll report back with results.

 

im interested in seeing your #'s hurry up and get back!!!

 

You must be the guy UR was talking about when I chatted with them at Stillen day.

Good luck dude! Will be nice having two UDP to choose from.

 

So, I'm back

We went to a dynoJet and I wasn't to excited about the way they went about it.
They started in second and then threw it into drive at 3500rpm with the OD off. So the results are for third gear with OD off and only represent rpm above 4000. (I'll scan the images tomorrow at school)

First Run:
157.9 Hp
172.5 Tq

Second Run:
155.8 Hp
168.8 tq

I asked, and they are SAE corrected.

They project an increase of 12hp. The prototype will be ready at the end of next week or so.

I'm gonna see If I can get to the track to get before and after 1/4 mile runs, b/c this is a better overall guage of the pullies performance (money is tight now ). The stock pulley weighed around 8.5lbs and they think theirs will weigh 1.5 - 2 pounds.

I was like damn when I saw the cars speedometer at like 130? in third. The guy didnt even put a fan on the engine. And then the dude just shut the car off (moron!!) I'm like uhhh dude dont you wanna let the car run so It can circulate the fluid and cool down! (Is he stupid or something?, the car gets incredibly hot shutting it down like that). So then he put a fan on it for the second run. we let it cool down a lot before the second run.

But I was impressed with UR's shop, cause they had a skyline (right hand drive) R33 sitting the bay (along with other muscle drag racers), and a VW jetta turboed (ball bearing) and they claimed it put out 400hp. I didnt ask about the skyline, I was gonna take a pic but I didnt (We've seen that stuff before). I wanted to take a pic of the car on the dyno, but I was rather disapointed with how it went down.


UPDATE: HERE ARE THE DYNOS
http://communities.msn.com/NissanMax...E/shoebox.msnw

 

Whats up Eric, Woah......the 12hp increase is good, Im looking for a UDP as well, and if this comes out it will be first on my list, Any idea on how much it should run ?

 

Hey Adreis, yeah 12hp would be nice . They said they got over 20 something hp out of a recent honda accord (2000 or 01) from a pulley set, which included accesory pullies (I was impressed... didn't know weed wackers could make that kind of power).

How's you new 5sp running?, must be fun huh . Wanna go to the track with me? maybe we can get some more max's to come for a T&T or something at LI motor sports park. I wanna run against another 3rd gen.


Matt was right about running it in second. That would have been the way to go. At least for the base line, that would have given the full power band to compare with the new pulley. Instead of just viewing the peak increase.

 

Track sounds GOOD!!!! let me just get this damn Y pipe on, things been sitting for God knows how long, and I also need the UDP, Track season will start as soon as Toylet and Hogan get their license's back!

 

Anyone have a UDP for sale that is used, im kinda cheap??? email me at yzman77@msn.com

 

You should be pretty happy with the results. Stock VQ's dyno around 145-152fwhp/155-165fwtq. You probably won't see a 12hp at the peak gain but I figure there should be about 4-6hp in the UDP. How high did they take the engine?

 

I went to the track before and after my ASP UDP install. I shaved exactly 2 tenths off my 1/4 mile time. And it took one full tenth off my 60' time. That is a big increase in low end power. I could feel the difference with my butt dyno. Also, my trap speeds suffered by about 2 mph's. I guess it hurt my top end for some reason. Another thing is that there was a 5-10mph head wind that day. That would slightly hurt your times too. That should give you something to compare too.

 

Hey thanks, I'm just piessed that It doesnt tell me the full hp, I wanted to see that. That why I wanna do 1/4 mile times to get a better idea.
I told them the redline was 6500, so they set the dyno to 6300 (I guess that good for my sake), although I redline my motor almost every day .

Thanks for that info aAron, It's good for comparason.

I'm not completley stock:
Homemade CAI
Cooler thermostate
indexed sparkplugs
tranny shiftkit w/cooler and syn ATF (doesnt really affect dyno but will 1/4 mile)


I asked they guy who took measurements for the pulley if he had an engineering degree (he grinned) that was a no, he said he was the designer (ummm okay), So I'm like damn this guy was working on my car. So I checked my Air conditioner belt, and sure enough, WAAAAY OVERTIGHTENED, So I figured I would go ahead and loosen up all of them, and yup they were all too tight. Next time I'll let him know whats up. He must have thought I've got one of the 400hp engines .

 

gotta watch that stuff.. that's the way you kill water pumps and alternators and stuff.. it'll burn up the bearings in no time with tight belts. good thing you checked. this should serve as notice for anyone else who has someone work on their belts.
Also remember that a brand new belt will stretch a small amount as it breaks in. just be sure to check them in a week or so to make sure they're still tight.

 

So for engine mods you only have a CAI? If you don't have a Y pipe get one. Your car makes good power for just an intake. I would like to see the power curve too. With the UDP + Y pipe you should be in the 163-168whp range.

 

Yeah, a loose belt is better than a tight one. Serpentine belts are ment to slip (a little). You wouldnt believe how much I loosened them up, and no squeeling. I plan to let the guy know next time (with my foot up his A$$...jk.)

Definitly the y-pipe is on my list, I'm glad they are working out the problems with shrinking flex sections. But damn I just found out that the near by track is closing down and is only open for race days and not T&T.


I just scanned the images, Who can host them?

 

that's why I went with WSP on their products. don't see much problem in defective stuff there.

sorry on the track.. I hate it when that happens. fortunately, the import/ grudge match racing scene is popular enough here that the track is opening MORE nights every week..
www.tulsainternationalraceway.com

 

are you for real! your saying a CAI, UDP and a Y pipe will leave you at 168HP MAX??????????

i cant belive that....

-AC belt?? whats that
took that off years ago....

 

He made that estimate w/ CAI and y-pipe. The UDP is not in the car yet. I still dont like the fact that it was done with od off. I think in the future I won't bother dynoing my auto (esspecially w/morons at the controls), I'd rather go according to 1/4 mile times.

Chris what does your vg dyno at?

 

http://communities.msn.com/NissanMax...E/shoebox.msnw

 

Interesting scale they used. Only the upper RPM.

Here is mine for a stock 5-speed VE comparison.

http://autos.werd.com/Lordrandall/Ma..._me_dyno02.jpg

 

Hmmm......maybe I wasnt following this thread closely enough. lol

So UR is making/designing a VE UDP and your dyno is your baseline so they can see what gains it makes?

 

i got a 3rd gen 5sp and im planning on puttin all this in over the summer as i get the money... any one have any ideas on how much horse power everything would give the car... and what else i could do to it?

PREFORMANCE: y pipe, catalic converter, cold air intake, underdirve pulley, fly wheel, stage 2 or 3 clutch, short through shifter, racing chip, spark plugs, fuel lines
BRAKES: new lighter ones
SUSPENSION: rear sway bar, new struts and shocks
INTERIOR: carbon fiber dash, lighter seats


Paul

 

That sounds about right

 

Yeah its b/c its an auto. They started in second, then at 3500rpm he threw it into Drive (with the OD off). They set the dyno redline at 6300, that why there is the sharp drop off (The guy probably took it to redline anyway). The original graph went much lower in rpm, but at 3500 there was an intense peak due to the shift, so he edited the graph.
I told the owner at UR that we should have done second gear and the full rpm range (I dont think he was willing to pay for multiple dynos).