R56 F21m turbo or mamba gtx ? Which is better ?

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Apr 15, 2018 | 09:41 AM

Brainpp

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F21m turbo or mamba gtx ? Which is better ?

Like the title says I am looking to upgrade my turbo to get some extra horsepower 😈. I’ve been looking at these 2 turbos And curious to see if anyone who has these bad boys installled would be kind enough to give me some insight on them as far as power they put down and reliability.
Mamba gtx
F21m

Last edited by Brainpp; Apr 15, 2018 at 09:49 AM.

Apr 15, 2018 | 03:37 PM

MarioKart

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From: Ventura, CA

Neither, I have used both and the housing is cheap and the wheels are the wrong size to make boost quickly and to. It cause surging

Apr 16, 2018 | 05:52 AM

Brainpp

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Quote:

Originally Posted by MarioKart

Neither, I have used both and the housing is cheap and the wheels are the wrong size to make boost quickly and to. It cause surging

what do you recommend?

Apr 16, 2018 | 11:27 AM

BigBoost

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From: Eau Claire WI

I would recommend going with a GTD47

Apr 16, 2018 | 12:32 PM

MarioKart

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Quote:

Originally Posted by Brainpp

what do you recommend?

send me an email MarioPalza@gmail.com
thanks
Mario

mQubed Motorsport Manic & RPM Power Tuning

Apr 16, 2018 | 07:41 PM

MiniMoic

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From: At 8200 over sea level

Prototype-r X51

Apr 17, 2018 | 05:35 AM

Brainpp

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Quote:

Originally Posted by BigBoost

I would recommend going with a GTD47

I’ve been looking up the gtd47 and can’t seem to find a dyno sheet would you happen to know around what rpm the turbo kicks in ?

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Apr 17, 2018 | 11:16 AM

BigBoost

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From: Eau Claire WI

Welcome to the mini world ‘ where performance is nonexistent

The only reason why I suggest the gtd47 ‘ because I can actually vouch for it currently running on my high compression n14 running max 13psi ‘ obviously there are other guys running, at higher psi ‘ but with my set up any thing other 12 is a little sketchy’ I’ve got less then 4000 miles on it with no issues !!

I personal haven’t did any business with homeskillet’ but I’ve talk with him a few times an he’s a pretty legit Mandingo get a hold of him I believe he has some package deals , I think ��

Apr 17, 2018 | 02:56 PM

keithmcgreggor

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I am currently running F21M with no issues, but I am considering a switch to GTD47.

BigBoost, what compression ratio are you running? I went the opposite direction (9.5:1, 77.5mm).