Mountune Fiesta MRX Turbo

[Bretley]

What's the basis of your comparison...did you ride in the GT2554r? The only comparison that can be done IMO is riding in both and then making a judgment call.

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I could tell you i have and leave it at that, but I haven't. I've got no reason to lie. I can say that all the videos of the atp2554r's I've seen have a much slower response in comparison to my MRX and that's one of the reasons for the custom wheel on the MRX. It would be nice to see the same car put both turbo on the car and tune them as fair as as possible to get that answer for you, but i bet we'll see planet X before we see that happen. Lol. When im finished with revisions, i will post some video's to help compare.

 

[Brura22]

It’s here!


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[shouldbeasy]

Shiny....

 

[M-Sport fan]

I wonder who makes it for them, Forge, one of the other Euro companies?

 

[FiestaTexas]

Im interested to see the results of the upgrade. Ill do my best to have it done before I do the final dyno run after all the Randy tunes are complete!

 

[antarctica24]

New mrx wastegate preload

Just got this from Mountune

Upgraded WG actuator preload: 2mm = one full turn of the turnbuckle.

Got mine on Monday. Weather permitting I will be installing mine this weekend.

 

[KnockOff]

Looking forward to this.

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[Brura22]

Just soaked everything in liquid wrench for overnight, hopefully have the snail off tomorrow


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[jtthirdeye]

Got my MRX kit installed...ran 12psi on slot 1 tune. Got an exhaust leak tick, tightened up manifold bolts and vband all the way, made no difference. Anyone else struggle with exhaust leaks?

 

[Brura22]

Back on she goes

 

[KnockOff]

Looks to be a much better piece.

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[Brura22]

Installed and running! Starting the logs with randy


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[antarctica24]

I got mine installed today, Finishing up plumbing tomorrow. I still am on the hunt for the guy that designed this turbo. The whole water line on the back of the turbo, mmmmmmmm if I find him.

 

[antarctica24]

Did you remember to install all of the gaskets? There is a manifold gasket, a fire ring, and the gasket between dp and exhaust.

 

[Bretley]

Got my MRX kit installed...ran 12psi on slot 1 tune. Got an exhaust leak tick, tightened up manifold bolts and vband all the way, made no difference. Anyone else struggle with exhaust leaks?

Go back and check to see if the fire rings are seated correctly on the turbo and downpipe. When installing my turbo, the v-band looks like it was completely sealed, but still needed to be pressed further up. There's only a couple places it can leak from.

 

[antarctica24]

Go back and check to see if the fire rings are seated correctly on the turbo and downpipe. When installing my turbo, the v-band looks like it was completely sealed, but still needed to be pressed further up. There's only a couple places it can leak from.

When I did mine I installed the turbo I the manifold outside of the car and then put them back in together. That’s the easiest way to make sure it’s seated correctly.

 

[kconklin33]

Are you guys running the stock BOV/DV with the MRX turbo?

 

[Bretley]

When I did mine I installed the turbo I the manifold outside of the car and then put them back in together. That’s the easiest way to make sure it’s seated correctly.

Yea I would have to agree with you on that. Trying to muscle the turbo in position with one hand and tighten the clamp with the other was not fun. Thankfully I've got arms like Mr. Fantastic so I was able to maneuver around to make it work lol.

 

[Bretley]

Are you guys running the stock BOV/DV with the MRX turbo?

The MRX Turbo will need an aftermarket BOV. Mountune sells one that connects where your sound symposer goes. You can also get the cp-e charge pipe with the BOV option.

 

[antarctica24]

I'm envious.