What are some max RPM limits you guys are hitting on builds w/ turbo upgrades?

[OneFord]

Working with my tuner now and trying to get a feel for what other guys are doing.

I'm running a Whoosh Hybrid on a COBB stage 3.

 

[Bizzareo]

Keeping mine stock RPM until I can throw a built motor together.

 

[jeffreylyon]

There was a video by DHM where he claimed to be working with Cobb to increase the max RPM supported by the stock ECU to 8500 and had a clip of a FiST pinning its tach. But, then, Russ was apparently pretty good at blowing stuff up.

 

[kivnul]

I think mine is capped at 7k. It hits a bit over that in reality. (I try not to look at my needle when I am frantically aiming for cones autocrossing)

 

[Quisp]

X47r, 7k, power drops after 6500, but I want a little over rev.

 

[koozy]

7,500 w/GTX2860R Gen 2


Sent from my iPhone using Tapatalk

 

[TyphoonFiST]

7,500 w/GTX2860R Gen 2


Sent from my iPhone using Tapatalk

Ditto!

 

[koozy]

There was a video by DHM where he claimed to be working with Cobb to increase the max RPM supported by the stock ECU to 8500 and had a clip of a FiST pinning its tach. But, then, Russ was apparently pretty good at blowing stuff up.

I'm running Russ' tune with a 7,500 redline. Russ never released the 8,500 redline for public consumption on a stock motor. He advised against it and limited his tunes to 7,500. The 8,500 redline testing was done on his shop car.

 

[Bizzareo]

@koozy
Was the 7500 rpm on stock cams also?!

Sent from my CLT-L04 using Tapatalk

 

[TyphoonFiST]

I am running stock cams....a lot of us are.

 

[koozy]

@koozy
Was the 7500 rpm on stock cams also?!

Sent from my CLT-L04 using Tapatalk

Yes, stock motor. Check out this thread for several dyno & virtual dyno plots and take note of where people's redline is at and who tuned it, what turbo, etc. GTX with enough fuel does not run out of steam and can rev to the moon, lol.

https://www.fiestastforum.com/threads/the-ultimate-dyno-v-dyno-thread.12227/

 

[TDavis]

Hmm, I'm with Tune+. Wonder if my redline is 7,500. I always shifted at 7k

 

[koozy]

Hmm, I'm with Tune+. Wonder if my redline is 7,500. I always shifted at 7k

During your tuning process data logging for your tuner, you never hit the rev limiter as part of the requirement?

 

[TDavis]

During your tuning process data logging for your tuner, you never hit the rev limiter as part of the requirement?

Nope, he states to go in 3rd gear from 2500RPM to atleast 6-6500RPM for the datalogs

 

[koozy]

It's important to see what's going and how the ECU reacts when bouncing of the rev limiter, especially with aux fuel IMO.

On a side note, it's sad when I see plots with people running GTX's and have the stock rev limit in place. A significant advantage of running GTX's is being able to rev higher without the turbo losing steam.

 

[MRX330]

I talked with Mitch briefly about this. With the built motor and V2 cams/springs, he said he’ll set the rev limit when it stops making power. No sense spinning it beyond that. I said “great now hurry up”! I didn’t

 

[V_2]

I'm in the process of tuning aux fuel and my revs are limited by fuel cutoff at 7K with a gt2560r, Tune+.

 

[MRX330]

A

I'm in the process of tuning aux fuel and my revs are limited by fuel cutoff at 7K with a gt2560r, Tune+.

Aux fuel and running out of fuel?

 

[V_2]

A

Aux fuel and running out of fuel?

Nah, plenty of fuel to spare. I just meant fuel is being cut to limit revs rather than throttle closure, assuming this is to allow for a potential higher redline if it is deemed beneficial to do so.

 

[MRX330]

Nah, plenty of fuel to spare. I just meant fuel is being cut to limit revs rather than throttle closure, assuming this is to allow for a potential higher redline if it is deemed beneficial to do so.

Oh you’re still tuning. 4 port?