I don't know what happened to my other post. Anyway, would one need to reset the ECU for the car to pick up the new UDP faster? I just installed the RVM pulley today. Should I just leave it to learn on its own?

 

1) The ECU learning thing is utter BS, your car runs in open loop mode at WOT and there is nothing to learn, at partial throttle there might be some advantage, but your car will not be any faster after 1 week of having a mod than it is the day you put it on.

2) UDP does not in any way change the amount of air or fuel going into the cylinder, therefor even if the ECU learning thing WERE true (which it's not) it wouldn't have anything to do with the UDP.

 

Thanks. However, I remember Cheston saying that the following after he installed his Unorthodox Racing UDP How-to:

I noticed an immediate improvement in low-end torque, which increased over time as the ECU in the Maxima got used to the new pulley. I would estimate that about 75% of the improvement comes right away, with the other 25% coming as the ECU re-adjusts.

 

I guess you can believe whichever you want then... if you are wondering and it makes you feel better, go reset your ECU, it takes all of 30 seconds to unhook the battery cable, a few hours of waiting, and then 30 seconds more to hook it back up. Don't expect your car to be any faster though

 

That's how You reset your ECU? I heard that method doesn't really work. I reset mine as explained in this link: http://vbxmaxima.8m.com/ecu.html
You know. I came on here to get sound advice without criticism. Until you have had a pulley installed or are an expert on it, then I will believe you. The instructions provided by RVM state that one would see performance gains in 3 to 9 days. That's staright from the manufacturer. I was wondering if that process could be sped up by reseting the ECU just like you would if you installed a y-pipe, instead of driving 500 miles for the ECU to adujust to the new y-pipe.

 

got any pics of the pulley, any good things about it or bad things ?

 

Why you got an attitude? Neal anwserd your question as he sees it. What else do you want? Do what you want. It won't hurt anything to reset your ECU. And yes, disconecting your battery will reset your ECU just the same as turning the screw.

 

I apologize, Neaoloc; it's been a long week. Thanks for your reply. Ironically, I read too much into his reply, and thought he was giving me an attitude. It's all good though. Tell me why the guy at Sonic Boom was like: If somethiung happens to your car once you leave here, I'm not resposible. He thought that the UDP should come with a balancer and rubber seal built in( He showed me a Honda one. However, he soon found out that none was required. This sounds like a risky procedure. He's not the first mechanic to tell me about the responsibility issue. Thank God it went smoothly.

 

There's a huge mis-conception about resetting the ECU on this board. Most people think that the screwdriver method or dis-connecting the battery for a couple of hours, like 5-8, will reset the ECU. Those 2 methods simply make the ECU forget the "check engine light" codes.

The only way really to make the ECU forget everything and re-learn your car's feul mapping characteristic from scratch, is to dis-connect the battery for at least 24 hours.

DW

 

LOL...those guys at Sonic Boom are Honda guys. They don't know too much about Nissans, nevermind a Maxima. That's why when I had the SC, I chose to install it myself than to trust those guys. Sorry I couldn't help you with the UDP install. I never done it, so I didn't want to mess things up. It's one thing to mess things up on my own car, it's another to mess it up on someone else's car.

 

how much did you pick up your UDP for and is it worth what you paid?!



eric

 

I oicked it up for $80 from the RVM group deal. I think it's definitely worth it. I starting to see the gains. It's pulling a lot harder now.

Kashoggio, I have pics of the pulley. I just need to upload them. However, here is a link to a pcture of one at RVM's website.

http://www.rvmracing.com/product.asp?0=204&1=222&3=380

 

I can tell a big difference when I've cleared a code by reseting my ECU. I honestly believe that when you clear a code, you clear the memory from the ECU and it relearns. I can also tell a difference in acceleration (slower) after resetting the ECU. The difference I feel is a lack of "snap" when I mash the gas. It seems to take the car a good 20-30 starts before it really begins to run strong again.


Dave

 

I don't have stop in my ECU selecting screw.
Is that bad?k

 

After putting on my y-pipe i was like what the heck, there's some gain, but nothing like 10+fwhp... After arriving in Toronto (500KM+) I was like

LEMAR

 

So you have no problems with the RVM? If so that's good b/c they have been known to leak oil and mess with the crank timing. This is what is keeping me from installing my RVM pulley.

 

I ran the RVM for 6 months on my 95 and no leaks, no problems, I have since taken it off and will install on my next project car.

Don't listen to that Neal guy he thinks you can't tell the difference in a 7-10 HP gain. He's right I can't either.

 

ive had the RVM on my 97 for about a year now with no problems.....i was waiting for someone to say rvm sucked

 

Alrighty then I must install my $37 pulley.....wait the belts and oil seal will cost more than my RVM .

I took a crank pulley off a Del Sol the other day and needed to use a torch. How do you guys get the pulley off?

 

RVM sux0rz.....

LOL

 

Shouldn't have gone RVM....worst mistake I've made......go definative