Anyone actually notice a positive change in time when they use the DR mod? Everytime I use it I run about the same or slightly worse in the 1/4 mile. I haven't really seen any benefits out of it. My best time has been with it off so far.

 

Is your tach off like most other 5.5gs? If so how much, and where do you shift to compenate for the off calibration ... ?

I'd say try a run with it properly working DR(no DR mod) and compare, and w/e gives you a better time, stick with it.

 

whats a DR MOD

 

Something that you need to learn and read about.

 

It won't help as much with a 2k2, they don't shift as quickly as the 4th Gens. You also won't see much if any difference unless you are running in the 12-13 sec range.

You should really think of it as a mod to save your tranny while racing because there is less wear and less heat buildup because of the quicker shifts.

 

oh ah thank you for the informative response

 

The DR mod makes pretty much absolutely no difference in my times n/a, about a tenth of a second (positive) difference with a 75-shot.

 

So that means you're slwoer with it? ...

 

So, I guess my 1.95 sixty foot times were a fluke......with my BFGoodrich G-Force Drag Radials????

 

lol ok yeah, that was poorly worded on my part. My quarter mile was about 1/10 of a second faster with the DR mod engaged. There. lol.

 

Damn that

 

So what? No help? That blows. Will see if it does anything with the headers.

 

It won't. This mod is effective when you're producing a lot of power or have a decent shot of nitrous. The shifting of the transmission is NOT a limiting factor for 98% of the Maximas on this board.

 

yeah, best times came without the DR in use.

 

Same here my best time of 14.4 was with no dr mod.

 

Mebbe - but with a healthy shot of nitrous, I can hear both tires squeal all through first gear, bang into second and squeal some more, then bang and squeal into third gear. DR mod makes one heck of a difference with some real power. Of course this was just on 225x55x16 BFGs - I've got a couple of sets of BFG DRs to abuse some more. (255x55x16 and 225x50x15's). Previous 1/4 13.7 -101.5, 2.0 60' on one slick - no VLSD.


I just finished abusing my new motor and new Infiniti VLSD auto with a 35-shot WOT + 75-shot (second gear and on - floor switch). Without the DR mod, it takes FOREVER to shift with an extra 100 hp...... D*mn, this setup feels stronger than before......

"an on-ramp is a terrible thing to waste"

 

I have never run with nitrous so i'm unsure of how the dr mod works with it. I do know far na you will run better times with out it.It feels stronger on the street but actually makes you slower na.

I'm also going to call on squealing your tires in third gear unless your driving in the rain.We don't shift into third until i think 82mph.Unless your talking of a little chirp.

 

Uh, did you miss the part about his 75 shot? I believe him and his chirping 3rd.

 

well the car feels faster, so i just left it on the switch

 

Believe it. Think about doubling your to-the-ground wheel horsepower. Think about getting to 80 MPH in less than 9 seconds. And second-to-third gear is faster than most peoples' manual shifting.

Until you do it, it's hard to appreciate.. Ask Jime. He wrote the manual.

 

yeah, i doubt he'd bs that. if he's running 13.7, ill believe squealing into third. I could chirp second with the DR with 00VI/I/Y/E, so with a 75 shot, i believe it. The DR mod made the car FEEL faster, but it was actually faster by .1 or so at the track without using it. My best PB came with it off, even though it felt like it was taking forever to shift.

 

Like i said are you talking of squealing in third as in your tires breaking lose and actually spinning.Thats what i would call squealing. Or just a chirp?

 

Two separate runs from at-stop on a long on-ramp today - 65degrees - lots of sun - dry air. Street tires 225x55x16 BFG TA/Gforce. Launched, waited until 3,000 RPM until going WOT and using first-stage nitrous ( these are street tires, after all). Tires screamed all the way through first, banged into second with tire screech, hit the second stage nitrous - more tire screaming through second. Tranny shifted into third with another tire scream and spinning until around 85-90 - kinda hard to tell - maybe it was me - and let off above 100MPH. Just like track nights.

Drag radials don't spin as much, but they still scream well into second. Don't believe? Go to a drag strip on test-and-tune nights. You'll see that and a lot more. I'm slow compared to some monster street cars that come out to play at night.

My mod list includes MEVI, DR-mod, tranny cooler, 3-inch Warpspeed complete exhaust, dual NX nitrous, various MSD RPM switches, Tokico Ilumina struts and springs, 16x7.5 ASA JS5 wheels, custom fuel manifold, AERO fuel regulator for the Walbro 255lph pump, and other fun stuff.

My limited-slip tranny now makes both front tires spin together, instead of mostly the passenger-side tire. I'm looking forward to another trip to the track on the DRs !

If you use too heavy of a shot on launch, your're not moving very fast for a while. I tried a 100-shot on launch, and pulled the drag radials in against the fender wells on both sides. Not recommended. JClaw's traction bars cured that problem, but using two nitrous stages makes it easier to control.

Mine's wired to the WOT switch for the first stage and a shallow box with four push-button switches wired in parallel on the floor, next to the left side, for the second stage. This is MUCH safer to use than buttons on the steering wheel!

 

I have no problem believing you burn your tires in 2nd but have a very hard time beleiving that you do in 3rd and why you would want to.You might be able to if you are on an uneven road with cracks but i don't think it would happen at the drag strip.

 

while spraying his 2nd stage nitrous? how is that unbelievable?

 

You're exactly right = "Two separate runs from at-stop on a long on-ramp today -" being a typical asphalt road with cracks. I don't think it happens at the strip, but there is too much happening at once to check.

I do it because it's kinda fun.... and on-ramps don't have a lot of cross-traffic or intersections - you just have to slow down to merge. Actually a good place to test mods "right now".