Mountune Fiesta MRX Turbo

Just for shits, I took this pic before install. Vband adapter looking down, placed over turbo. As you can see, much larger than the actual hot side housing inlet [emoji1303][emoji1303]


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However, after I started it, I have a pretty loud exhaust leak. I loosened and re-tightened the vband, snugged the manifold studs (I did end up pulling the manifold) tightened up everything on the downpipe...and I still cant seem to find it. It sounds like its around the manifold/vband area.

I did have to reuse the stock gasket (11k miles on it) because I didn't have one on hand and dealers were closed before I knew I needed it. Any ideas, anyone have a similar problem? Car seems to idle fine and I blipped it a few times and the install otherwise looks good. No issues with leaks.

For those of you who are yet/soon to install the MRX... It would be an AWESOME resource to the community if someone could do a good install write up/how-to with pics. I for one would like to install myself when the time comes and would be great for those who are "on the fence" about diy'ing it.

Is the 42.4 measurement on the v-band adapter outlet?

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42.4mm. Outlet on manifold is about 35mm

also, make sure you have your stock hot side charge pipe. Installing this turbo for a customer today and he had aftermarket hot side so I had to give him my silicone to go from the supplied hot side pipe to the intercooler.

I'd be happy to answer questions on installation after tomorrow when I'm done with this install. Not taking pics though.

Are you (is the customer) going to tune it on the dyno, the street, or both??

So I got everything bolted up, after quite a long adventure. I did eventually find ATPs 2554 kit instructions, which answered a lot of my questions.

However, after I started it, I have a pretty loud exhaust leak. I loosened and re-tightened the vband, snugged the manifold studs (I did end up pulling the manifold) tightened up everything on the downpipe...and I still cant seem to find it. It sounds like its around the manifold/vband area.

I did have to reuse the stock gasket (11k miles on it) because I didn't have one on hand and dealers were closed before I knew I needed it. Any ideas, anyone have a similar problem? Car seems to idle fine and I blipped it a few times and the install otherwise looks good. No issues with leaks.

Just a guess but did you transfer the fire ring over to the v band flange from the old turbo?


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22-23 psi?

Decided to go away from mountune and go with Ryan from PDtuning. Just recieved the first map for slot 2 and the car feels solid. Nothing agaist mountune i just have a gd relationship with ryan. Ive noticed that on my setup im holding 22-23 vs the 18-20 im seeing here? Could it be the manifold? I will have final tune numbers monday.

Decided to go away from mountune and go with Ryan from PDtuning. Just recieved the first map for slot 2 and the car feels solid. Nothing agaist mountune i just have a gd relationship with ryan. Ive noticed that on my setup im holding 22-23 vs the 18-20 im seeing here? Could it be the manifold? I will have final tune numbers monday.

You have SS ported stock manifold?