[TheGoodTheBadTheUgly]

Hey guys, I am having some very high IATs and I am trying to figure out why. I own a ETS 7" FMIC and I am running MHD Stage 2+ with 18-21 Psi. Map is 91 ACN and I am using Canadian 94 Octane.

My IATs are simply off the chart and I want to know if I have reached the performance limit of the ETS FMIC at that level of boost or if it works fine for other users meaning that it's a problem on my end and that I have a defect or an issue somewhere else in the car.

Anyways, if anyone who owns/owned a ETS 7" FMIC for N54/N55 could share his data it would be extremely appreciated.

Thanks!

[9krpmrx8]

What is "off the chart" ? There is no way you have reached the limits of the FMIC at that power level. I am 20psi or so on the E50 tune with an Amazon 5" stepped and my IAT's are never more than 25F above ambient and that is in traffic in 100F weather.

[TheGoodTheBadTheUgly]

Originally Posted by 9krpmrx8

What is "off the chart" ? There is no way you have reached the limits of the FMIC at that power level. I am 20psi or so on the E50 tune with an Amazon 5" stepped and my IAT's are never more than 25F above ambient and that is in traffic in 100F weather.

I know for a fact that many 5" perform absolutly good at these levels, I am just trying to see if all of the ETS 7" are poorly designed (Which I doubt with a $1K FMIC) or if I have a malfunctioning unit or some other issue. By of the chart I mean IATs that climb at 100 extremly fast and usually sit at 120 and easily can be 160 after a pull. Like obvious flaw.

https://datazap.me/u/thegoodthebadth...0&data=4-11-20

[9krpmrx8]

You started the run at 40C, what are the ambient temps? A 25C gain on that run is pretty high.

What bumper do you have? Is your FMIC clean?

[TheGoodTheBadTheUgly]

Originally Posted by 9krpmrx8

You started the run at 40C, what are the ambient temps? A 25C gain on that run is pretty high.

What bumper do you have? Is your FMIC clean?

I'll get back to you with the exact name of the bumper but it's the stock one for a E90 without the aero pack or however it's called. I have tried to wash the FMIC multiple times with low pressure water to not damage the fins. I will also get back to you with the ambiant temp that day.

[9krpmrx8]

It's probably clean and although the M Sport and BMW performance bumper do allow more flow to the FMIC, I doubt that is your issue.

[TheGoodTheBadTheUgly]

Originally Posted by 9krpmrx8

It's probably clean and although the M Sport and BMW performance bumper do allow more flow to the FMIC, I doubt that is your issue.

Ambiant temperature was: 20 Celcius so arround 70 Fahrenheit.

As far as for the bumper, I also don't think it is that relevant in my case but here it is: 51117226711

I think I am just in denial that something might be wrong with an intercooler that expensive but then again, my boost figures are on point so like there is not a lot of things left to go wrong with the IC. It would be visible right?

[9krpmrx8]

I do think there is something wrong for sure, your wastegate duty cycle is really high compared to mine at similar boost, load, and rpm which is around 60%.

[TheGoodTheBadTheUgly]

Originally Posted by 9krpmrx8

I do think there is something wrong for sure, your wastegate duty cycle is really high compared to mine at similar boost, load, and rpm which is around 60%.

Huh I do not know that much about wastegate data, but that would mean that it remains closed more than yours right? Meaning it routes more exhaust gas towards the turbine?

[9krpmrx8]

It just means the turbo is working harder. The original turbo could just be wearing out. I have seem some do this that had some compressor wheel damage from poor filtration or a leak after the air filter.

[TheGoodTheBadTheUgly]

Originally Posted by 9krpmrx8

It just means the turbo is working harder. The original turbo could just be wearing out. I have seem some do this that had some compressor wheel damage from poor filtration or a leak after the air filter.

Yeah well as much as I would like to stick a single turbo on it, it simply isn't the time yet hahaha.

It's just counter intuitive that a turbo wearing out works harder, you would tend to think it would be working less, but in this case maybe the turbine needs more exhaust gasses because the compressor is struggling to reach boost target. But then that doesn't make sense since I am overboosting by 2 psi.