Mountune Fiesta MRX Turbo

[Se7eN]

91 should produce 235?

probably around 250, the gas in my area y close to 91

 

[Gogoggansgo]

It's an excellent turbo, I've been running it since release and with 0 issues. But if you dont wanna wait, there are definitely other good options. On a side note, I ordered the Clubsport Suspension the last week of July and still haven't received them. Even emailed them yesterday and have yet to get a response. The site should say "out of stock" instead of "usually ship in 1-2 days".

Both this and the whoosh hyrbid are on par with each other when it’s comes to whp numbers

 

[Se7eN]

Both this and the whoosh hyrbid are on par with each other when it’s comes to whp numbers

Very similar, although the hybrid hits peak torque about 1krpm sooner which makes for more traction issues.

 

[Se7eN]

That's actually pretty decent, a Vdyno on 3rd gear gets me around 252hp in 90 degree heat and crappy gas "93oct"

I'd like to update this.

Recently went to the dyno in a day that my tuner was working on another car and decided to dyno for fun. Turns out my pump was tune was way to conservative so we raised the timing a few degrees and a tiny more boost. Ended up Vdyno at around 265hp. which is a bit of an improvement on what is inconsistent and low grade gas.

Also, just for clarification the tune was conservative cause I refused to touch it before due to gas suddenly getting worst in the area after hurricanes. (still have the old tune just in case)

 

[Se7eN]

Question for anyone who still reads this thread.

What's the Max boost you've seen out of the turbo?

 

[Sakel]

Placed my order with mountune, they do come with the 17psi wastegate by default now. I'm hoping they include locking hardware as well, but if they don't I'm going to try the strongest high temp loctite I can find

 

[TyphoonFiST]

Placed my order with mountune, they do come with the 17psi wastegate by default now. I'm hoping they include locking hardware as well, but if they don't I'm going to try the strongest high temp loctite I can find

Here it is.....

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[Sakel]

Here it is.....

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it's going to be something like that or green loctite, either way shipping can't happen fast enough

 

[TyphoonFiST]

it's going to be something like that or green loctite, either way shipping can't happen fast enough

Here you go....cant get any better.

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[Sakel]

Here you go....cant get any better.
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went ahead and picked up a bottle, at literally ten percent of the mountune fasteners it can't hurt

 

[TyphoonFiST]

Those fasteners can be had for a fraction of Mountunes cost another member has found a very similar style....they are listed here on the forum somewhere.

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[Se7eN]

went ahead and picked up a bottle, at literally ten percent of the mountune fasteners it can't hurt

If you take your time to tighten them down when the turbo is still out of the car you should not have any issues. Also use 1 1/2" Bolts and locking Nuts, on the V-band Adapter. On the bolts that go to the back of the Manifold. After I did that there have been no more issues.

 

[ROCKYFiestta]

can u run e40 on this setup with a custom tune? just read other posts and some people say you run out of gas ??

 

[ROCKYFiestta]

also I have a the entire cobb I/c pipes n all I will need to replace the one that comes off the turbo again?

 

[TyphoonFiST]

Yes you can....MRX330 is doing it just fine.

 

[jeffreylyon]

can u run e40 on this setup with a custom tune? just read other posts and some people say you run out of gas ??

With aux fueling. Without aux you’ll run out of fuel with pump gas before you run out of turbo.

 

[ROCKYFiestta]

ok I get it on the fuel now so upgrade the pump from woosh or injectors or both then or the single port is good enough I really only want to end up in the 280 range I only have e85 and 91 available to me here as well. so far the numbers on straight 91 where not very impressive to me for me to drop 2k for a few hp. heres hoping im very wrong

 

[TyphoonFiST]

Single port*

 

[ROCKYFiestta]

just curious as well anybody try the full e85 pump yet ??
https://whooshmotorsports.com/colle...nce-upgraded-fuel-pump-assembly-free-shipping

 

[TyphoonFiST]

Full e85 doesnt yield that much more power over an e60 or e50 mix. That is why most Tuners Rec. Just doing either one.

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