Sorry for the double post. I thought this may be a better forumn. The directions say that it will take 5-7 days for the ECU to adjust to the lighter pulley. 1st impressions are both good and bad. First off, the car fly's through the rpm's much faster, thus giving a feeling of faster acceleration. Second and the bad, you couldn't tell my 2k2 Auto was running while stationary and after the UDP was installed there is a slight jiggle when stationary. Doesn't matter if it's in drive, park or neutral. It's a tad more jiggly when the heater and A/C are on. Is this normal? Will the ECU correct this? What could be the problem?

 

When i installed my UDP, I didn't notice any more of a jiggle. When i installed my Y-pipe, my car seemed to idle a little lower, which caused a jiggle. But, I could get rid of this by turning on the AC or putting it in N. So, your problem sounds different. Mine was dependant on idle speed. I haven't had the problem you're talking about.

 

Ummm...when the car "flys" thru the rpms faster means the car IS faster. That's what acceleration


Dave

 

You can correct me anytime with nice comments like that.

 

My UDP made no change in the idle of the car.

 

mine does that too..

 

Same here.

SuDZ

 

I'm into the second day of having my UR UDP installed. I just noticed tonight that my idle is slower when I was at a traffic light. It was spinning as low as 650 rpm; I thought that previous to the UDP, it was spinning as low as 750 rpm only. No jiggle.

 

too long ago for me to remember the difference. I don't think there was any jiggle...did you tighten the pulley enough?

 

fellow 2k2 here and I have no jiggle but I believe my tensioner pulley is **** (squeeling noises)

 

fix it NOW!!

 

I am not exactly sure that what it is. But it will be done in the next few days

 

all this talk is making me ancy to get mine on

 

No reason to be ancy. I have mine for over 2yrs and no issue.

 

If you have you lights on, your AC off, in gear, sitting still while putting strain on your PS pump... then your idle is going to dip down. 650 is not NOT normal. LOL.. lemme try that again... 650 rpm while in gear, sitting still is normal. As soon as you put it in N, the rpm should go back up to about 750.

I remember when I put my UDP on. My rpm didn't change all that much. I think you are just being more conscience about your idle speed since you are trying to install the UDP. Let us know if it starts to dip below 550.

 

my 93 dipped below 500 once i believe and I had the stereo blasting so I didn't realize it until my car starting shaking like i had hydrolics of something. It only did it that one time and didn't stall either

 

I think he means he's anxious to get it installed.

 

exactly

 

Squeeling noises usually indicate loose belts. Have you tigntened them? The will stretch after the initiall installation.

 

I am going to look at it today and figure out what the problem is. I hope it is just a slipping belt that will make me

 

i just ordered myself a UR UDP. merry christmas to me.

 

forgive ma ignorance, but can u even put an UDP on a supercharged max?

 

i believe u are correct...

 

no you can't, the s/c kit comes with a new pully made specifially for the s/c...........i don't think scma2k has a s/c, i've been to his web site and i think it's just false advertising........haha

 

i dont have a S/C u are correct. did u guys think i did because of my org name. just to let u know SC are my initials and thats why my sn is what it is.....sorry for the "false advertising."

 

it's all good no beer...."AND KNOWING IS HALF THE BATTLE"

 

Sure. But then you'd be underdriving the blower, too. So you'd be losing much more power than the UDP would free up, unless you went to an even smaller blower pulley.

 

My problem was the gas I believe. I started using Shell that week and that was when they changed their formulation. I started using Amoco and the jiggles went away. I tried Shell again and the jiggles reappeared, so it's Amoco for me!

 

what rmp is a stock max suppose to idle at?? My idles around 400 but that might be worng cuz I have idiglo so theres a chance that my indiglo gauges may be off from the stock. I don't really notice any jiggles though.

o technically I'm not stock, I have intake and ypipe but i don't think that should make that much difference.

 

err, ya if you dont feel any vibration, then your needles need to be re-calibrated