What Redline/Fuel Cut Off You Running
 

I am testing out new tuning, and my previous tune maintained stock fuel cut off at 7450. The new tuning is quite the change but also has a higher fuel cut I believe at 7800.

Since I am Mr. Conservative, today I was driving bit hard in first hit 7700RPM and almost sh*t my pants.

Whats your feeling about what fuel cut off and what to set it at?

I'm not even joking: I'm running 6500 until we get everything working :)

Do you have any headwork done? If not, I HIGHLY recommend u drop the redline.

i hit 7800 a lot... i know that power isn't being made after 7000, but it makes me drop back in my sweet spot of the turbo. Regarding cuts i would love a harsh cut to actually throw flames/bangs ( no im not kidding), but ive been told Ecutek doesn't have the choices of running both cuts (fuel+ ignition together or something in that context )

7700 because I need a longer 2nd gear on the track. Street driving I shift 6500-7000.

Your 2nd gear is useable on track? :eyebulge:

I'd love to see your car in action.

August 30th, you'll be in the driver seat.

I was referring to smaller kart tracks and autocross.

Mine is set at 8,000rpm but I rarely rev it that high. But when I do, man it pulls like a mofo.

Since I have a SC the power continues to climb past 7,5k rpm. It's a 25whp increase at 8,000rpm from 7,500rpm

Why not run a smaller pulley and shift sooner?

Can't wait to see this!!

Mine was set to 8000 RPM on both my Visconti and FA20Club tunes, and I had no fears of reving it to that to maximize the hump in my horsepower curve:

http://brz.ridedomain.com/dyno/std.gif

You don't need to rev to 8k to maximize your torque curve ... Your curve is so broad... James doesn't think I need to raise my limiter and my turbo spools slower than yours

mine will probably be set at 6800-7k. I'm conservative when it comes to pushing the stock motor past its limits. In a few years when I no longer dd the car, I'll drop in a built motor and push it much higher

With the turbo I'm looking to put in a 3.91 FD so I won't have to wind out 2nd gear so much in autocross. I plan on running 7800RPM as the redline, but will be tapering boost a bit above 6800 just to keep stress off the engine.

Seems the community is mixed. Toan of pTuning says hes done hundreds of dyno pulls out to 8k with no ill effects and he recommended to me to rev my car out that high to maximize power band on the 3076. Both Delicious Tuning and Jamesm don't recommend it other than extending 2nd gear. CSG doesn't recommend it.

I have seen plenty of FI dyno graphs here with people running to 8k. Is it safe? Unkown. So far it seems alright.

In the end it is your motor and if I had your setup and the torque curve stayed flat or kept increasing past 7400 rpm then I would probably choose to run up to 8k rpms to take advantage of that at the risk of more wear and tear.

While I'm still Na I have 4 maps that do different things. Maps 1 and 2 keep the stock redline fuel cut.

maps 3 and 4 keep the same redline however it does not cut fuel. It just stays at redline until I shift it.

3.91 wont be that noticeable :), and i am doing a longer fd in one week


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Well that's the thing, Bill says his tune is safe and tested. I have heard that from others and well, kind of echos that in this thread but... Clearly varying opinions.

Thats my feeling, the tune maybe safe but that does not mean mechanically long term it will hold up.

I requested the redline be dropped to 7500. Never had an issue before shifting below 7K, but this tuning ramps up so fast at high RPM I cant catch it and autox is even worse.

Do people realize that dyno pulls and racing are 2 different things?

Show me somebody who is racing, regularly and revs it to 8K and let's see how long their engine will last.

Have you guys looked at the rocker arm design of our motors?:iono:

I'm surprised they last to 7400...

Well it is known that rocker arms are the weak link other than rods ! A few motors already blew from this issue, but most were revving over 8grand. My mechanic buddy already has a built set of heads/cams in his frs who was with me on the dyno and kept insisting to not over rev !


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I've done calculations and for my needs it's enough with the right tire size. I think the 3.73 would be too much. Still trying to make the decision though.

A local tuner pushing 500WHP floated a valve at 8K. He replaced the valves with Kelford ones and no more issues.

What Redline/Fuel Cut Off You Running
 

Ah ok, since my car is mostly a street car i hate doing a high boost pull with the current gearing. I just end up mashing gears and be in the top of 5th in no time.

Regarding values i remember being told the stockers are so soft @DesertFrs knows more about it


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