I raised my rev limiter to 7,100 last year ('05 enthusiast, non-RevUp).

I mainly bumped the rev limiter for autoX...there's many times where I'm at redline in 2nd gear just moments before a braking zone, so it'd not worth shifting to 3rd and back down...the extra few 100 rpms lets me not waste those precious tenths of seconds!

here's the dyno...you can see the before AAM tune and after (the after goes to the new 7,100 rpm redline). You can see that power drops off a little after the OE redline...and this is with headers, pullies, flywheel, intake, plenum, and ECU tune.



here's the post I made regarding the ECU tune/dyno:
https://my350z.com/forum/tuning/246942-aam-flash-o-dyno-pics-and-vid.html


**so far I've had no issues w/ the higher redline...but I rarely go into that range.

 

I have been running my car for over 3 years with the reflash to 7200rpm with no known issues. For me i like to rev out first and second gear to 7200rpm and then third i will change around peak power and so on. No use to rev higher in those gears ( no power )

Here is my dyno chart.. I need some cams

Todd

 

makes sense. i think IMO and what i have seen the DE likes the lowend as compared to the newer models. i just installed the jwt valvetrain when i did cams but havent done any tuning and the dyno hated life when i went to dyno untuned. thats dynojet for you. aceman, ill send you that dyno when it happens sometime next week. i really havent come accross and de cammed dynos other then Z1, wish there were some out with some less built motors.

 

I am getting tuned with cams saturday at forged with a haltech on a stock motor and will be posting my dyno results. Watch for the thread if your interested.

Nick

 

Hmmm...since you did the AAM Flash, in theory I could do the same since I'm looking at the Osiris. I can just have UpRev send me a custom map for my mods and such. Makes sense.

Damn, your drop off in power doesn't seem very bad at all. And neither does Acemans. So I suppose a proper tune/map should suffice for avoiding a large power decline past 6600RPM?

 

both sheets show roughly a 20 whp drop in about 650 rpm...that's pretty significant and just emphasizes what's been posted. Both cars also have headers and test pipes, so the drop off on a car without those will likely be more substantial

 

good deal and good luck, your running the r cams? they look comperable to mine. are you increasing your red line and did you upgrade the valve train?

 

1 less shift in 1/4 mile when you have shorter gears... that's one reason I have it...

 

20WHP? Look closer. I just examined First 350's in photoshop and it's about a 8-9WHP drop 6400RPM vs. 7100RPM. Not bad at all, if you ask me. I'll take a look at Aceman's now too.

Edit: Aceman's does fall 20WHP, though. No arguments there.

 

Thanks, Yeah im running the R's. I am planning on increasing the redline to 7200 but as far as I know I am on the stock valve train. The cams were installed by the first owner of my car at a Nissan dealership. I'll hopefully be able to post up a thread saturday night, and then dyno's monday when I get back.

Nick

 

nice i ended up doing the JWT vavle train while i was in there (as well as another grand in misc parts and such), i didnt want to take chances with float and such (im running tomei 264s). ill pm you the link to my info when i get tuned (hopefully next week, my shop has a 20grand lsX job he needs to finish and has been putting off for two months so his wife wont let him do anything else till its done. i use a corvette shop in atl). im really intrested in the before and after dynos and to see if the gains were as stout as they were when i was tuned with bolt ons (31whp gain after tuning). best of luck and harass ceaser for me.

 

Sounds good, I am concerned with float but with a few notable people on here revving to 7200 alot and seeing no issues I feel better about it. Is there a reason why you arent having your car tuned at Forged? I too am interested in my before and after dyno's , I am expecting to see some big gains from completely untuned with cams to a full "Sharif Tune". Thanks for the info and I'm sure I will harass everyone at Forged while I'm there

Nick

 

IMO even a 50 wHP drop is worth the extra revs...I think it's obvious that without much more internal work, just reving higher won't produce more peak power - but a few more 100 RPMs in some situations (autoX, drag racing,...) can really come in useful!

 

they seem like a decent shop for boosted cars. I had a bad experience with a BIG name import shop tuning the Z the first time around and have only seen decent results out of forged with n/a cars. The shop i go to now has been more then accomidating correcting the first shops errors. The owner is a GM master tech, with no experince on utec, had a 21whp and 30 tq gain his first time on it(lets just say the first shop ripped a tune of the net and didnt put a wideband in while tuning). ill pm the link to my dynos from the first shop and the most recent. good luck. any idea where your car sits now?

 

Yeah, hopefully UpRev can put together something for me when I decide to order. =)

 

Interesting. I'll look forward to looking at your dyno's to see where the improvements were made and how. I have no clue where the car is as far as whp goes, but I should have baseline #'s tomorrow!

Nick

 

Looking forward to your results. Hopefully things are going well at Forged today and we'll read your results tonight!

You're going to love the Haltech, too.

 

See where the power drops off after 6200 rpms? There is no point to rev you motor out to 7200 RPM's.

 

Tell me how forged is, I plan on getting my UTEC tuned there next month. How hard was it to set up an appointment?

 

just because the power drops off at 6200 doesnt mean that thats the best place to shift at. why would you shift right after getting the peak hp???? i shift my non revup at 7100-7200 so that i can land in a better place in my next gear. for example if you shift at 6500rpm out of 2nd gear into 3rd, lets say you land at 5k, that leaves 1.3k worth of rpms to climb before getting to peak again. instead if you shift out of 2nd at 7200 you can land at about 5500rpm in third leaving you only 800 rpm away from your peak. that means you will get the topend power faster. and according to my chart i have more power at 7k-7.2krpm than i do at 5krpm. Ive tried shifting at many different points to try and achieve a better 1/4mile and this by far is the best.