I just installed an RRM UDP and I noticed at idle my headlights and gauge cluster dim pretty low. I had a UDP on my Focus and my lights would dim, but not any where near as much as they do with my RA. I just wanted to know if this is normal and if anyone else has any has had the same experience with the RRM UDP.

 

You are the first guy EVER to notice that. Call me I would like to hear more about it to make sure everything is alright.

ROAD/RACE

 

Am I the person to NOTICE it, or did you mean EXPERIENCE it?
I am definately going to be giving you a call...

 

My headlights dim also but im not worried about it since it goes back to normal when your driving where it really counts.

 

I am not complaining or anything...
I just wanted to know if it is normal for them to dim that low. I checked my battery at work and everything is good. I am just trying to be safe...

 

Cokeanddrum, this is normal. This happens when you install the UDP. You're not the only one, heaps of us UDP owners have this ordeal. I know I do

PM Joe's_Evo8.

It only ever happens on idle though, nothing serious and nothing that won't affect it in the long run. There was an explanation about this, but couldn't find it.

Just search up "Pulley" and go through the searches.

 

happens on mine aswell, im not worried my old car did that all stock lol

 

Everyone with the pulley has that dimming. It's normal and the voltage stays where it needs to be.

 

oh yep thats normal

i have the same problem, in this days i was thinking my battery was damaged or something now I remember this, hehe

well its not something you can call PROBLEM but yes in idle the lights looks low, and the windows go up slower if you try to close the 4 at the same time

 

Is there any way AT ALL that having an UDP could possibly affect the Throttle Position Sensor? I ask because last night my 04 threw a TPS code and the 'throttle response' is bad enough that I'll have to go back to the stealership for the warranty work (21k miles out of 100k) and I don't want the dimming lights to get them looking around too much and asking why I have filled mounts etc... That and I really don't want to pay retail + labor for the TPS! Search turned up very little on anyone else having a TPS problem but I have noticed an off and on burning smell that I chalked up to the Honda's I was passing if that helps. For the record I don't think the pulley had anything to do with it going out (still love it in fact). I'd pull it b4 going in but there's still slush on the ground and no garage to be had.

 

No, the UD pulley won't have any effect on the TPS.

 

Gracias.

ROAD/RACE

 

How do u like the UDP?

What HP changes have u noticed since putting it on?

 

I posted in the performance parts review if you want to take a look. The difference the pulley makes is very nice. I would recommend the RRM pulley to anyone. I am going to get an RRM IM and RRM axleback for back pressure after the new year, hopefully. Then head to the dyno...

 

The RRM *cough* pulley still remains one of the best mods per dollar than you can buy.

The light dimming isssue is normal. I did a full entourage of tests that showed voltage at idle would not really hurt anything. If you have a bumping 50000 watt system the pulley may not be the best for you but by 3k rpm the alternator is providing more than enough power to the system. The alternator is a dynamic device, meaning as the RPM's climb so does the output of the unit. The voltage regulator will control it so at 6k RPM it does not put 130amps into the system which I am sure it is capable of.

The TPS would not be affected by the UDP. I have yet to see one code caused by the the UDP and even solid motor mounts. Your dealer would have to look harder.