Ford Focus ST MK3.5 - Mountune or ECU Remap?

[gr_96]

Apologies, I'm pretty beta at this sort of stuff, so I'll be talking relatively high level.

I'm looking into upgrading my 2015 Focus ST (2.0 Petrol 250BHP).

I've been suggested the MR300 Mountune, which looks and seems to sound pretty good.
However, there's a local company who are offering an ECU remap to 297BHP for a FRACTION of the price.

My question is, aside from the catback exhaust giving a nicer sound... What's the pro's and con's to the remap over the hardware changing?

[Smurfsarepeopletoo]

I would be wary of someone offering 297bhp from just a remap, are you sure its BHP and not PS.

From what I understand, most reputable tuners will take this to around 275BHP from a map, and then the extra is with the bolt ons, and then mapped for the bolt ons.

[sherman]

Nothing really to add other than I have a factory mk3.5 st3 montune 275 estate.
Im just interested to see what you end up with.

[gr_96]

Yup - BHP.

A mate has suggested doing bits of both. As this is a Dyno Remap apparently it's a better option than the plug and play COBB from the Mountune kit?
He suggested buying some hardware and then doing their remap, that way I'm not maxing out the stock hardware?

[gr_96]

This is the mountune kit I've been looking at. I'm no mechanic, and I'd be asking a garage to fit the kit. Would this be the right?

[Smurfsarepeopletoo]

That all looks about right for the upgrade, and when you say its a rolling road map, do they live tune it on the rolling road, or is he taking it from the info on the site that says it was developed on a roller?

[gr_96]

Suppose that's a very good question. I honestly don't know. I'd have to find that out I guess! Is it particularly important either way? Like if he says it's going to 297 but it's actually 290 or whatever, like it's no biggie I suppose no?

[Smurfsarepeopletoo]

Live mapping tends to be better as long as the person knows what they are doing, as you can adjust parameters while the car is running.

If its not not being mapped on a rolling road, I would go with a good named tuner like, Revo or Collins Performance, and possibly just buy all of the parts second hand and fit them yourself.