Originally, my next power mod was going to be the MREV package. I didn't think I'd track my car much, but MAN, after tracking the first time, I can't wait until the next time I get a chance.

So now, I'm wondering if MREV would be a good idea still. It takes away power 6250+rpms, but adds so much in the mid-range. Daily Driving and gas mileage would benefit. At the track right now, I am still spending a decent amount of time shy of 6250rpms.

Would you suggest MREV for a track car? Or for a DD that sees some track time?

 

Are talking about a road circuit or a drag strip? I’ll assume it’s a road circuit.

What mods do you have on your Z now? Do you have tires? Do you have brakes?

And why on earth aren’t you topping the RPM up to 7k???? Why want more power if you’re not using all of it as it is anyways?

I say don’t MREV until you really top out.

 

I was wondering the same thing. I've been reading post after post, trying to make up my mind. Still havent...

 

Road Circuit.

I have exhaust and pullies. Looking to get sways next. (Was thinking MREV as next power mod) I'm not modding purely as a track car, but as DD too.
Tires - I'm going to wait until I kill the stocks
Brakes - They've been holding up ok. Stock 06 brakes with motul fluid do a pretty good job. (Thanks BeyJer) The sessions are usually about half an hour and I don't go to the track enough to justify/afford to get a BBK yet.

I rev up to 7000 when I can, but for the course I'm at, I find myself at speeds where I am in between shifts. So I'm higher than just staying at redline of 2nd gear, but not quite above 6250 of 3rd.

Am I supposed to stay in second gear instead?

 

I can’t say which gear you should use. You would have to ask fellow Z drivers running the same track you did.

I had understood that you were short shifting when you hitted 6250RPM. “Ideally” you should be either accelerating flat out or braking as hard as you can. The only time you should coast on a track is while cornering. So just use each gear until you get to the red line and shift then. Some track might require different approaches, locals can help with that.

Now, if you haven’t been to the point of overloading the stock tires and brakes yet, I’d hold up on spending money on other power upgrades. You will need it eventually, possibly sooner than you think.

Of course, that is just my opinion. My Z Track as only a Y-back exhaust for sound, a set of track pads and a set of Toyos RA1 for my track days. I have plenty of fun and I’m reasonably fast, even with the stock suspension.

 

I'd wait until they dyno the new MREV+ or ++ or whatever it will be called. But I agree with Kolia, spend your money on seat time and save for a BBK and tires. Unless the 06's have amazing brakes (with the slightly bigger rotor), they will be your weakest component.

I made it through two seasons on the stock suspension as well. Sway bars are recommended though as they are relatively inexpensive and do give you a bit more flexibility in tuning. At least that was my first upgrade.

 

Just for clarification. I am only holding revs through the corners.

Hypothetically speaking...I reach a good drivers level and have tires/brakes and taking driver skill level and experience out of the equation...would MREV be a good or bad mod for the track?

 

if you're a good driver, how can any mod be bad for the track?

the additional revs would be nice. how much revs are you holding through the corners? are you saying your in 6k+? if so, why? accelerating out only gives you a .5s boost of acceleration then you have to shift? i'd prefer to be 3-4k and in my torque band through a corner rather than upsetting the cars balance with engine braking and what not.

 

I would get it for sure. I've seen a lot of dyno's where the power above 6k was the same as stock, so nothing lost on the top end, but huge midrange gains.

What does the ++ have over the regular MREV mod?

 

depends on the corner, but I'm around 5xxx rpms, which is good for the MREV mod. But it seems to lose some power after 6250 rpms through 7000 rpms. So depending on how one drives on the track, it can possibly slow you down on the track?

MREV+ has the added benefit over the regular MREV of machined runners (1 & 2) in the lower plenum.

 

Well, more power is more power. The more you have, the better.

IMO, I think that at this point, it's splintig hair for a few potential seconds saved that could be had just by working your line and technique. I think that, yes, it could be benificial. But not realy worth it.

Jun14scr, taking a curve at sub 4k RPM is most of the time too slow, unless you're at the start of a series of esses. The way the rev-up engine is geared, you can pretty much keep it between 4500-7000 RPM all the time. You're then playing in that zone between peak torque and peak HP.

Exiting a curve at 3000 in 3rd vs 6000 in 2nd (not sure of the exact rpm here), even with the added shift, the higher RPM car will reach the end of the following straight sooner and with more speed.

 

Hi Guys,

Some of you may know I will be going to the track this weekend. The purpose of the event is R&D.

I will be doing some serious data logging of engine parameter while on the track. The objective will be to quantitatively define exactly what difference it will make to use MREV on the track. You'll see.

It will be an indepth analysis.

Details will be posted.
Tony

 

NOICE. lookin forward to the seeing the results.

 

How much is the MREV upgrade installed?

I was just at Summit Point, WV this past weekend in my Z. I agree with Kolia that "ideally" you should be accelerating hard or braking hard if you were racing, but if you are doing Driver Ed. events and you are not in the higher free passing run groups (Black or Red) then unfortunately you have to lift when you don't get the "point-by" and you have to loose your momentum.

I just got my Z used in Jan. It a 2003 Track Edition. I'll be using up my 3 year old dry-rotted stock tires, which wont take long I think, as I melted/shaved the sh#t out of them this past weekend. Anybody know what is the diameter of the stock Track Ed. front & rear swaybars?

I had a TON of fun in my Z this past weekend at the track and like liudacris I can't wait for my next outting. I would save your stock street brake pads for the street and buy a set of CARBOTECH XP10 (front) & XP8 (rear). They provide outstanding braking capabilities for the price and longevity. Eveyone has their own preference when it comes to wheels, tires and brake pads -- but I like them and would recommend them (my $0.02).

Eveyone likes to "settle things" with their right foot, but I would save the power mods until it becomes the limiting factor. Put money into safety (seat, harnesses, etc.), wheels/tires, suspension and brakes first. Start with pads then save up for BBK. My Brembos on my Track Ed. with CARBOTECH pads are more than adequate. I would just get SS Brake lines and maybe try those frozen rotors. Pump money into track time. It takes a while to grow a sack. Then when you squeezed all you can out of your Z and your lap times are no longer going down then look to power mods. For me personally, that will be my approach to "dialing-in" my Z. Nothing more frustrating IMHO when those spec Miata's and 944's are carving me up and inhaling me in the turns so I have to point them by in the twisty section of the track and then be plastered all over their rear bumper on the front straight because they don't have the top-end. I was surprised how much I could reel people in and close on them on the front straight away with my Z which is just the initial 287 offering and the previous owner put on a NISMO cold air intake and cat-back exhaust. That's it.

So anyway. Just my two pennies on the table... HTH.