Today, with the help of Unorthodox Racing in Deer Park L.I., I did what Stillen should have done 6 months ago - certified a UDP installation on the 2K2 Maxima.

It turns out that the pulley made for the VQ30 will fit if the timing ring is removed, and the belt for the power steering needs to be a little longer, but that's it.

Future pulleys for the VQ35 will be made without the timing ring (even lighter than before).

See my web site for complete writeup and description:

http://www.greghome.com

 

Greg, i haven't read through all of it yet but so far very interesting.

I do have a question about this statement though:
"The engine cover needs to be removed to gain access to the ignition coil - a few hex bolts and it's off"

It's interesting to know that, when i had my car dynoed.. not only did they run it in 2nd gear and non-SAE correct it, they just attached something close to the intake manifold.

 

They're supposed to run the dymo in whatever gear is closes to 1:1. In the 2K2, that's 4th gear...

 

I have an auto so that would be 3rd for me. But they insisted i do it in 2nd as that's how Acura's have it.

Anyway, how's the ride so far with the UDP installed? Any differences you can feel?

 

Thanks for sharing the results Greg, 205 FWHP is very good for stock. I can't wait to see the results of the UDP!

 

Greg-

Where does your HP start to drop on the dyno?


Dave

 

Good job Greg... Thanks for the writeup. So tell us, Did you notice a considerable difference?

-Left

 

Reading through you site I'm not sure what the gains are for the UDP on the dyno?

What were your baseline runs and what were your UDP runs?

 

Read your page again and saw:

"Performance gains will be measured again on the dynojet several weeks after the install. Check here for results!"

You should have dynoed right after the install the same day you did your baseline runs? Why didn't you dyno with the UDP? Makes no sense?

 

His theory was to give the ECU time to learn the new settings. The 2k2 ECU doesn't seem to reset itself if you just disconnect the battery.

 

Hi Maxtor,

If you notice on my web site, I list the dyno runs totally separate from the UDP stuff. Both were coincidentally performed on the same day, however they are not related. The purpose of the dyno was just to see what the car was stock.

>> You should have dynoed right after
>> the install the same day you did
>> your baseline runs?
>> Why didn't you dyno with the UDP?
>> Makes no sense?

The car WILL be re-dynoed on the same dyno in a few weeks, WITH the UDP and at that point the gains from the UDP will be apparent. There will be no performance mods performed on the car until it is re-dynoed because I do not want to dilute the results.

The dyno was in a separate building a few blocks away.

The other reason for waiting is to give the ECU a chance to re-adjust itself to the new setup, and maximize any gains.

It is not necessary to re-dyno the same day, in fact you may not see much gain at all if re-done so soon.

As soon as I can scan the runs I will post JPEGs or TIFFs of all 3 runs on my site. Sorry for the wait guys - I don't have a scanner!!!!

 

Hi Dave,

I promise I will post pics as soon as I can.

The runs were all a little different...

The first run horsepower seemed to shoot up like a rocket until about 4800, then trailed off to redline. Torque curve is weird - it is mostly flat with a big drop around 3800 RPM and then it goes back up again - does this have to do withthe variable intake?????

The second run, horsepower climbed to a max of 205.2 at about 5400 RPM, then trailed off (less so) to redline.

Torque curve is similar to the 1st run.

What it shows me is that this engine has a dramatically powerful torque profile throughout almost its entire powerband.

 

Hey Greg,

I looked at your site and noticed that you installed a Stillen FSTB.
Looks great. I had mine for about two months now and noticed that it is touching the hoodliner a little bit.

Did you notice that on the driver side the bar is touching the hoodliner just a little bit?

Maybe I didn't adjusted correctly?

Thanks.

 

Mine touches the liner there too.

 

You do not need to reset the ECU after a UDP install!!
You really should have dynoed right after the install!
I assume the dyno did a CF for SAE?
If so you should probably be ok but you should have dynoed right after the install anyways....still can dyno a few weeks later...

 

Maybe, maybe not.

Just like most other performance mods on a car you do need to let it settle down before punching it. This is just playing it safe.

If he did an SAE corrected dyno it wouldn't matter much anyway given he'll be redyno-ing in the same shop using the same car.

 

>> You do not need to reset the ECU after a UDP install!!

Who said anything about resetting it? The computer has the ability to "learn" certain driving profiles so it can tune itself, which requires many "trips" or starts of the engine and *driving* for it to complete its program. Resetting the ECU means CLEARING it, which I definitely do not want to do. Read the ESM if you really want an education in how OBD II works.

>> You really should have dynoed right after the install!

That would have served no purpose other than to underestimate the gains from the UDP. The post-UDP dyno WILL be performed, I promise. Just give it a few weeks. This isn't a mustang or a camaro - the computer will wake up to the gains made POSSIBLE by the UDP but not all at once. Finesse and patience are the name of the game.

The car is definitley more powerful already (I can feel the difference). Most noticeable is that it is easier to launch from 1st gear without bucking. The clutch seems more forgiving in the lower gears as well.

Greg

 

OK, dyno graphs are now up on my site for the "before" runs....

 

Thanks greg

 

Btw, are you able to get an SAE corrected graph?

Dang... that WinPEP slogan makes me wanna complete it with the word "Auto"

The Difference is Auto-MAGIC!