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Message: <blockquote data-quote="A4XRBJ1" data-source="post: 3996957" data-attributes="member: 78511">Bro Aziz,easy to share. Basically you want to stay as close as you can to ambient temperature, which is already very hot in MY. Mitsu Engineers did a good job on FMIC from fromer Evo's to Evo X, this is why the car is performing as good as the former ones whilst having the extra weight on it (I think 150 kgs).Why does it make the car so much faster when the max hp stay the same? It's about the area under the power curve, not the max hp as stated in another article already. Can I maintain close to full max hp all over my rev band or only in one small area of rpm, the rest I do lose a lot of power?As in real world examples, please refer to this excellent article from PerrinPerformance where they're giving insights into their different design of the IC, proofing with some numbers that their solution is stable at the intake temps:<a href="http://www.perrinperformance.com/pages/show/94" target="_blank">Perrin Performance - EVO X FMIC Test and Tune</a>So back to your question of why did the Mitsu boys don't do better with the IC? I just quote Jeff from PerrinPerformance on that one, it's easy to answer:"Well the stock parts at stock boost levels work pretty well. But start turning up the boost and then things start to see their faults"Somehow most Evo owners go the route for increasing their boost, which is why it turns out that the current system is then becoming restrictive (besides the fact that exhaust for example has to qualify for all worldwide noise and cat efficiency tests, under all conditions).The above mentioned link has a small number comparisons which is showing that at 7300 rpm you have a difference of 24 degrees of Fahrenheit. Here's another quote from the article:"So with some scary data behind us we thought, our IC must be able to do much better! It does and it deals with that extreme Pre-IC temps pretty well. The Pre-IC temps were still hot but about 20F cooler. First runs peaked at 380F, and the last run peaked at 400F. Well that is a good start. This drop in temp could be from the IC being less restrictive than the OEM core. We saw about .9psi vs 1.5psi drop. So the turbo has to work less to make the same boost, more efficient! Now the data that really matters. The Post-IC temps were much more inline, but still about 20F higher than we normally see. The first run showed a peak of 114F and the last run hit 120F. This was huge improvement. With a good tuning tool this could be worth a little extra timing and more power! Or, if nothing else a safer setup. EGT's also improved peaking from 1616F in the first run and 1636F. So overall the PERRIN FMIC ran more than 30F cooler on the IC oulet temps, and almost 80F cooler! All that means a happier safer engine."Hope this helps,Andreas</blockquote>

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