I searched and have not found anyone with the same mods as me and an 06 revup. So heres my question and what im facing. I have an 06 revup motor, the mods: K&N drop in filter, Kinetix test pipes, AAM y-pipe, Topspeed exhaust, MRev2 and 5/16" spacer, and the AAM reflash. Now the reflash hasnt gained me as much power as id liked if any so I was wondering about going to the UTec and having dave@funtion tuned tune it for me. My question I guess is is it worth spending the 1000 for the Utec + tune for the gains I will get? Will I see a decent increase in power with the Utec? I know that the reflash was really a waste of $ and the only thing I like about it now is the removed speed limiter but Ive only hit that once so thats not even worth the $ imo. So just some feedback would be nice. Thanks

 

I would also like to know this ... only my set up is a little more aggressive assuming I get the cosworth parts when they are avaliable.

Crawford headers
HKS dual ti exhaust
UTR test pipes
Cosworth intake plenum (once it comes out)
Cosworth CAI (once it comes out)
Koyo radiator

This with a U-TEC and tune should hopefully come close to 300whp mark without breakin open the VQ for cams.

 

Id say if you wanna maximize and possibly see what you can do to hit the magical 300rwhp you need a utec. The power can only be made to shine NA in these cars with one .remember the Z is highly tuned already. So some kind of engine management is nessasry to yield the most out of anything that your adding to the car. THe a/f are what can give you the hidden new power that isnt being used now because of either running rich or lean or maybey just not being able to scavenge it due to the stock ecu not really maximizing what new power has been added. I mean thats not its job its job is to keep the factory peramiters in check. So yea is it worth it NA yes if thats your goal. Its the only way, the utec is my last path after every possible NA mod for my revup aswell. 300rwhp must be given to the revups lmao the reg DEs only made it with cams i believe ....im hoping we can scavenge enough to make it before the HRs hit the mark. It a race man. The utec is the only way to get the most out of it really and tune to see what mods really arnt doing jack for ya. btw 3 inch exhuast NA i wonder if that yielded anything. All 3 inch exhuast i seen on the Z NA have shown lower numbers then the 2.5s and singles. If its a 3inch all the way i dont think thats helping you much. Heres my goal with my revup



Varis duct with part that directly connects it to the air without the gap
strup headers
Huge debate UTR re test pipes or Fast int res test pipes.
Debate on JIC Single TI for weight or Fast inte True dual maybey injen TI track
mrev2
spacer
and finally a utec
i mean in the end why go NA if not to finally get a utec.

 

^ I can tell you that I love my UTR test pipes. They sound amazing with little rasp compared to others. They look incredible too. Maybe that will help with your debate.

I can also say that your prob going to want to re-think your choice of headers and intake plenum mods. Obviously theres nothing wrong with them... but if your trying to attempt at the 300 whp mark, your going to need crawford headers and a better intake plenum set-up. The spacer and m-rev 2 have been used countless times and they do not supply enough to get to 300.. we all know that. You can run these but the difference is that youll need to crack open the VQ for cams etc to hit 300whp. Hopefully with the new cosworth Intake plenum and my set-up I will get almost to 300whp before cams.

3" exhuast is just too big for NA. Great for FI, but I believe a straight 2.5 does the job for NA.

 

^ yea i was looking at different plenums and all but i seen nothing do much or lack of info on a revup with actual results. Are the cosworth parts beneficial for the revup aswel, have they stated improvement for both engine types. I know the runners and stock plenum is very diff internally from the reg plenum from the previous years on the revup. If so i may hold out the strup for some crawfords. I heard that the engine has to be removed for a crawford header install. i have to look into that. ANy concrete info on release dates and info on the cosworth parts and info on the revup benefits if any. So far everything is seen looks beneficial to the reg 287. Which i meanthe plenums obviously can be used for both. I guess, we wont know until more info comes out .

 

Hey Rblover69, i saw you stated that all 3" exhaust on an n/a Z have shown lower numbers then a true dual one. Is this true? Because if could help me answer why my brother's Z which is a 06 revup as well with the same mods (mrev2 and spacer, test pipes, intake) but he has injen's true dual exhaust and always ends up pulling a car on me? Could the exhaust explain that? Ive always wonderd why? Ha and yea Ive seen and heard now conflicting informantion on whether or not the mrev2 and spacer really are that great on the revup for power gains as well. Oh well so I guess my origional question still stands about the utec?

 

My 05 G35 sedan has a revup. I just had the longblock replaced due to oil consumption, and it now has ~2k miles on it.

On the intake size, I've got a stillen airbox, ztube, and mrev+. On the exhaust side, I've got Ichiba headers, Kinetix resonated test pipes, and a stillen true-dual exhaust.

Last fall, before the new longblock, and headers, I dyno'd 263 SAE on a local dynojet. A few months before, when I had crawford cats instead of test pipes, I dyno'd 259 on the same dynojet. That same configuration yielded 240 STD on Sharif's dyno dynamics.

After I got the new longblock and headers put on, I could only muster 258 SAE on the local dynojet. Last saturday I had Sharif install and tune a utec. My best baseline on his dyno was 237 STD(~3hp less than the previous best, but now with the new engine, headers, and test pipes). After the tuning was over, all I got was 246hp STD. I was very disappointed, but not in Sharif's efforts or his ability.

That 246 STD on sharif's dyno will translate to roughly 267hp SAE on the local dynojet, give or take 3 to 5hp.

Take it for what you will.

 

+1. I was wondering the same thing. I just added a nismo exhaust to my Z and didnt add any additional N/A modds because i wasnt sure if they were the money. But 300+whp on a N/A Z would be nice. Wondering the same.. if a utec + cams+ breathing modds can get met me there...

 

Yea this engine in its NA form has shown best resutls from a 2.5 exhaust. Stillen Borla fast intentions etc have shown better results then a 3inch exhaust. Think about it , the majority of 3inch manufactered exhaust normally tout FI apps as to yield best results. A larger exhaust on a car like a Z lets say 3inch as you have may contribute to lower your TQ down low and changing the power your car makes sig maybey putting it up top where if your racing you will see the other car surpass you due to them putting more tq down in the lower rpms then you are. I would suggest getting a 2.5 setup mated with 2.5 res testpipes mated to 2.5 collectors to the headers. I mean there your having a nice outward flow and should yeild better results.
Im aiming for the 300rwhp mark in the revup. But as said before a 3inch exhuast NA isnt the way to scavange power NA without FI.

 

Timeattkz, Where did you find out that Cosworth is making a CAI? From what i was told, the Cai at sema was only a display piece. Not trying to argue but i want that intake to match the plenum myself.

Also I'm not sure what debate about exhausts is going on. Are you comparing a SINGLE 3" to true dual 2.5" or 3" DUAL to 2.5" dual?

 

All I have to say is good luck cause you are gonna need it, lol.

 

I'll let you guys know how mine works out. I will be going to SGP in the next couple of weeks to have my utec tuned

 

^ umm .. thanks i guess. Do you know something about the new cosworth parts that we all dont ?? I said that I was hoping to get close to 300whp with these mods. I can garentee that the cosworth parts far exceed the numbers put forth by a spacer and mrev ? Sorry for thinking outside the box .. what was I thinking It takes ppl to try different things in order to hit new higher limitations for our VQ and I intend to do so. 300whp(or close to it) is not unatainable with a good n/a set-up, ecu and a good tune. Ill take that as positive criticism... and report back to you when I''ve achieved close to my goals. I dont believe I have my head stuck in the clouds.

RBlover69 ... goodluck with the build man. I'll be interested to see how it turns out.

 

Just take some time to see what Doug and the guys at Crawford + countless others have done with the VQ and not hit 300whp yet. Then you'll understand why I scoff at the idea that you can take I/H/E + tune and hit 300whp. It's gonna take more than that. I don't doubt that the Cosworth stuff is going to be good, but equalizing air in the intake chamber is not gonna be enough to break that magic 300whp. I don't doubt that it can be acomplished, its just gonna take a good bit more than what you have listed.

 

Thats very possible but thats the unknown right now .. until those parts come out and are dynoed. And what makes you think that the cosworth parts are not going to produce numbers?? Read the thread over again regarding these parts.. I highly doubt that a company like cosworth will fail at a high dollar product like there new intake plenum. The parts chosen may technically be just breathing mods .. but Id like to believe its a little more extensive then just ur dime a dozen I/H/E set-up. I will be getting cams and minimal headwork in the future anyways. I will break 300whp no problem with that. The idea set forth is that I may be able to provide more of a foundation before adding cams and headwork thus clearing 300whp with ease... unlike before the cosworth intake plenum where the spacer and mrev on N/A Z's were not even close to the mark before cams.

Call it what you want, but Id rather have my bullet proof built NA Z with 3XX whp than a 400hp FI unreliable Z for the same amount of money. I can guarantee the driving experience for track and street will be up to par and I wont be disappointed. Im confident that many N/A Z's will arise over the next year with the release of new parts like Cosworth etc has recently shown. Its about having a balance of power and good tuning to make a good track/street car. Im not trying to get upwards of 500hp .. thats not usable nor necessary in my eyes.

Different paths for different goals and aspirations .. I respect that.

 

first off doug etcs efforts did hit 300rwhp actually surpassed it , but they needed cams i believe . The dual throttle bottie setup also attained a that number aswell i believe. But it was to costly. The revup i believe can hit these peak numbers . The reg DE aswell but just with a little more time and tuning we will see it. Your judging based on accounts of one company. Rickdogg has hit 290rhwp in a reg DE . Your doubt just shows the lack of faith in achieving a goal. Its nice to be a leader , lets and i give props to those who do so. Why doubt someone thats doign something your not. And if your believe its not possible then creat your own thread on why its not. But honestly we dont care. My goal with this revup is 300rhwp. And after that laughing gas to see upwards of a 400rwhp goal. If the reg de can handle boost at 400rwhp + a nice progressive shot after the 300rwhp goal should be nice. FI times definetly. And you know what probably more of a sleeper to the low PSI TT guys lol.
This is a hobbie, if rickdogg also hit those numbers without the cosworth items whose to say its not attainable with it. Moderdyne is also speculating on a exhuast that there releasing that is suppose to nice and there as confident as to have a shoot out which that sparks my intrest as hydrazine does his homework extensivly. My revup baslined at 251 rwhp my 05 z was at 235 rwhp on a dyno jet. I believe its def possible. And yea i can TT or FI the VQ but i swore my outh the the NA gods man. Its more of a challenge and nice for the track (roadrace) instant power is as borat says THATS SO NIIIIICE!!!

 

RBlover69 you are missinformed.

Info from dougrace zs:
290.0 RWHP N/A Crawford Performance Plenum, Headers, Straight Pipes, Cams, Head Work, JWT Pop
Charger, Greddy E Manage Ultimate, Borla Exhaust
See my Dyno Chart http://crawfordz.com/dyno%20(Medium).BMP

See the thread here with his posted info:
https://my350z.com/forum/showthread....52#post3240152

 

Didnt his dual throttle body setup yeild over 300rwhp. I couldve sworn it did. Unless im getting this confused it is possible. So many damn threads about NA lol.

 

nope, 298.7, but they never got it running right, plus it would have been too costly to produce so it got scrapped.

You can read about it here:
https://my350z.com/forum/showthread....03#post2161603

 

cool nice, thats very close. on a dynapack it wouldve yeilded the mark. Thats one hell of a setup. 298.7 is very close. wow. I wonder if a revup can do it. My hopes are there.