Just installed some Berk HFC's and a MotorDyne XYZ, and will soon add the Shockwave V2 becasue it sounds so freakin good .

I was going to order the Osiris Standard but was unsure of a few settings - How are your maps configured and in what order?

1. Power
2. Launch - what RPM are you limiting
3. ???
4. Valet - what RPM and what speed are you limiting
5. Stock

Any experience (good or bad) raising the 6500 rpm rev-limiter on a V35DE? I sometimes bang into it and wish I had just a bit more.

And last, is there any benefit for me to raise the idle off rpm? I read that some do it to eliminate the clutch chatter.

Thanks

 

Hey, did you ever end up getting that Shockwave V2? How do you compare it to your last setup (Berk + XYZ resonated).

I'm also curious on your long-term test of your Berk + XYZ resonated. Did your minor rasp issues get any worse... any emissions or smell issues? Still happy with this combo?

 

My limiter was set 300rpm higher, although I have hit that occasionally while at the track its not something you want to do on a regular basis.

 

Bringing this back from the dead in case you still have questions.

On the non-revup motor (such as your 2004 and my 2006 AT), you wont want to rev it beyond the factory limits. Not any extra power beyond that to make it worth it. On a revup motor you could raise it a few hundred rpm and be ok.

I really only have two settings for mine: Map 2 is my regular power map, Map 1 is the same but with modified requested torque tables for firmer shifting, and the rest are all stock (I never use those). Economy maps are more of a mental thing than reality.

 

Been a long time since I started this thread in 2010 and its great to see the interest and activity continuing in this community.

I now have the Berk HFC, MD XYZw/resonator, MD Spacer, MD's thermal gaskets and, FWIW, I installed the MD shockwave V2 in 2011. The HFC / XYZ with stock exhaust was good but the V2 is a whole 'nother beast. Love the deep powerful sound that's not outlandishly loud or fart-can like at all. I get compliments all the time on how well it sounds...and how fine the G looks even after all this time.

I've had my UpRev map tuned twice since then and by far this has been the best bang for the buck, no questions asked. Not that I use it very much :-) but the launch map (2) revs to 3200 and when I release the power map (1) the takeoff is just about flawless. 2nd to 3rd should be so good.

I did up the limiter to 6800 on UpRev's advice. Seems safe, and I agree there's no power there but you're not increasing the limiter to intentionally run the engine at that speed. It's more to minimize the potential engine timing/fuel cutout if you're powering hard into 2nd or 3rd. I know this isn't good either but heck, you have to make sure that the governor is working every once in a while.

I've done a bunch of other mods over the years...including a suspension upgrade and some cosmetic accents and, at this point i'm just not sure where to go from here. Have toyed with the turbo/supercharger route but have just not found the time to take that on...and I'm a DIYer. I can't believe my car's gonna be 10 soon. Don't think I've ever had another car for this long..
This is why I'm back...trying to figure out what's next. Should I keep it or move on to something new.

 

I thought Osiris overrides the governor?

 

Yes,you can set the override with Osiris.The question is how much. At above about 6200 RPM you are not gaining more power as the engine is past its power curve. Torque and Horsepower flip at 5200 RPM so as you increase RPM you aren't gaining anything.

 

This isn't true, If you have just a little bit of exhaust work (Catdel) you can easily rev them further. I rev mine to 7100 and my dyno's support using this redline as do my traps.

 

Post up those dyno sheets then... Because the ones you have in this thread https://g35driver.com/forums/tuner-d...ix-plenum.html show HP dropping like a rock after 6200... like every other VQ35DE

 

Actually look at the differrnce on the second graph, After decatting it made since to rev out further, Just because your falling off doesn't mean abandon ship it all depends where you come back into the next gear at.
For example my subby is dropping like a rock but revving it out results in a faster trap vs shifting

 

That doesn't change the fact that the engine does lose power at high RPM. Keeping it in gear at the track is beneficial because your not cutting power to the wheels and wasting time to shift at the very end.

 

I still wouldn't rev a non revup DE to 7100. It has nothing to do with the exhaust flow its the internals that can't handle it. Also shifting later to shave a tiny bit off your time is a drag racing technique, not something you should do everyday.

 

+1

Any good racer will do this on the home stretch in the last gear... not in every gear down the track.

 

Exactly, But your also not considering were you come in at. So if you look at my dyno vs stock revving out still makes more the peak stock.

I'm the kinda nerd who sits down with excel and plots my gearing to decide based on my dyno graph shift points. Think of it like this, Your still making more HP than you did stock at the same rpm points. I can assure you that you will pull harder in 3rd gear @ 6600 then where you going to be once you shift the 4th and vice versa.

If the car's not valve floating and the curve supports it...

 

Then after a couple months your engine inexplicably lets go and you're looking at an expensive rebuild. Once you've rebuilt a couple you'll understand the limits of this engine... Giving advice like that to everyone on the forum is just reckless and shortsighted.

At least half of the decent tuners out there require customers to explicitly sign a waiver before they will raise the rev limiter.