I searched and saw some threads on timing via UTEC, and such. But has anyone ever done it using a Nissan Consult II?

I had timing advanced on my 01 Maxima years back, and it made such an enormous difference in power, that I never felt the need to add any bolt-ons. It added a lot to the mid-range and high-end, and also eliminated the shift lag. I've experimented between going back and forth (15-degrees and 17-degrees) and the differences were very apparent. It didn't make much of a difference on VQ35 Maximas for some reason, but someone from TSZ33 suggested that such isn't the case with the our VQ35DE? So here I am asking, has anyone done it? If so, what have been your experiences?

 

excellent question..am very curious about this to! I was talking with service guy from Nissan and he had mentioned that he did this for a few of his buddies but only advanced it 5 degrees at most, unless they wanted to use race gas. Am completely new to tunning/timming so I dont know if what he said was bs or what...anyone chime in!??!

 

On 5th gens, they changed the ECU for 2001s which allowed us to advance up to 20*. But there were some severe drawbacks to going anywhere past 18*. Knock becomes an issue at 19, unless you're using race gas. With standard 93 you can feel a loss of high-end power, and 20 was just bad. With 18* you're more prone to knocking, but only under very heavy conditions like weight and extreme heat. I stuck to 17 as did almost everyone else who had it performed.

I know someone who can do it on my Z, but I'm still a little hesitant to toy with my car this early on.

 

There used to be quite a few guys mentioning that they had gotten the dealer to advance timing by 2° (limit allowed by Consult?) or to get their idle RPM bumped. Starting in 2004 with the ULEV ECU, the ability to bump the idle was removed and I assume the same has happened with the advance ability.

 

=O

Say it ain't so. Someone confirm/unconfirm this. =(

 

Most Consult changes are for diagnosis only and after a switch off and restart they return to preprogrammed values.

Rewrite of software and reflash are really the only permanent changes.

 

You can increase or reduce the timing, I believe only +-5 degrees

 

Is this a permanent change or does it really go back to preprogrammed values as the previous poster said??? Thanks!

 

Wrong. Until the day I sold my car the BTDC was at 17*.

 

As read by Consult/Dataligger or did you actually use a timing light to check the crank marks?

Desired [requested] may not equal actual.

 

Used a Consult. A close friend of mine is a service tech at Nissan and has his own Consult II. He's come over frequently to toy around with it on his and my car. What you're confusing it with is the older Consult tool and the ECUs Nissan used on 95-99 Maximas that would reset when you shut down the car. But with the 2000+ Maximas and 2002+ Altimas that changed.

 

As an independent we rarely retime cars still under warranty so you may be correct?

We have Consult 11 and 111 [laptop] but I never checked the real [crankshaft vs displayed].

With chains important to observe crank vs cam sensors as the chains stretch and the 3 sensors diverge.