Is MP215 the way to go?

Tokendog said:

Yeah, I'm no expert at this by any means but I am under the impression all kinds of things can impact your turbo's ability to make power. Environment, altitude, etc. so hopefully someone can chime in and give you some insight or things to look for.

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I do remember Randy or Ken from Mountune say that if you have any other improvements ie aftermarket exhaust etc that because of the increased power and torque the ecu will hit an allowed torque limit thus limiting boost to a slightly lower value. Not too sure if CSM has any other mods to his which could cause this. Other than that the only thing I could see as Tokendog said enviroment, altitude and possibility a loose fitting somewhere.

Anders Olsson said:

I hate that limiter, I and not the car, should be in control.

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The reason that limiter is most likely in there for the 1st and 2nd gear is for two reasons, first to prevent excessive wheel spin and second & more importantly to limit the amount of torque being applied to 1st and 2nd gear. Again the reason why Ford is approving MP215 as warranty approved is because they don't want to shorten the life of the transmission by wrecking 1st and 2nd gears because they are probably only designed to take only so much torque.

I have seen this in other cars where guys add a turbo to a NA engine and experience a short time later a failure of 2nd gear in the the tranmission due to the change in gear ration between 1st and 2nd gear and all that torque being applied to 2nd gear when it wasn't designed for that level of torque.

Anders Olsson said:

So basically you can say, that the ST´s transmission isn't up for the job - even standard wise.

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I'm saying there and reasons why manufacturers generally try to limit torque being applied to their gears in the transmission so that the transmission as a whole has long life expectancy. The transmission is designed for the job of the stock car with no mods, I don't think 1st and 2nd gear are designed for the full amount of torque available and at the same time have a long life expectancy.

mrtn said:

I wanted to piggyback on this thread with my issue. I'm wondering if I do have an issue. I'm a total newbie to tuning but I've had my mp215 for a while now. Here is a screen shot of my mtune can someone tell me a) what I'm looking at and b) do I have a boost issue. All I'm seeing is -0.80 to 1.5 is this normal? Or should I be looking at different gauges

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Yes you have a boost gauge, the one that says "Boost Pressure" and the units are in metric as Bar. If you want to see the numbers that everyone talks about 22psi of boost you'll need to change your units one of the menus. You will want to pick the one that says imperial/metric I think. which will give you psi and deg C for your ACT air charge temperature.

mrtn said:

Ahh see that would help. Thank you. I'll have to fiddle with the settings some more. Wish this thing came with a manual...

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You can download the manual from Cobb:
https://cobb.app.box.com/ap3-for-usermanual

It's not exactly the same as the mTune but will help you with accessing the different menus. Cobb's AP3 has a lot more features than the mTune. Have a quick and you'll be a pro oh and make sure you keep your firmware on the mTune up to date. Think there was one before Christmas that adds support for 2015 FiST and fixes glitch to reconnect with car after car is restarted. Before had to turn off and turn back on.

ZREXER said:

Bingo, we have a correct answer! Use to have a turbo Miata with the Flying Miata set up. Great after market turbo set up, but had a rear differential failure eventually and synchro's went prematurely in the transmission. Turbo more than doubled stock HP and torque. I drove it moderately hard but did not auto cross, but as well built a car as it was, was not designed for the power increase I gave it

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I was big in the Suzuki Swift GTi scene for a number of years, thus my name, anyways saws guys take the stock 1.3l dohc engine put a turbo on it with 200hp at the front wheels and then wonder why they were killing 2nd gear?


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I think the dirty tail pipe issue is more of a problem with Ecoboost engines and more specifically direct injection. There are a couple of videos on Youtube that explain what's been going on with the higher levels of carbon buildup on the valve train of the engine. Ford has in some cases warrantied the whole cylinder head to fix the carbon build-up issue, which is a temporary measure. Hopefully Ford is working in the back ground to find a solution to this issue.