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Benefits of FMIC'S???????

livewire

By livewire,
in Engines & Forced Induction

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livewire Experienced

livewire

Posted
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So....with a FMIC ill only be looking at a difference of 12P.S.I as opposed to 10P.S.I....cause if im correct a standard turbo cant be boosted more than 12p.s.i safely regardless? Is there a noticable difference in power i.e on dyno run? or is it really not worth the cost if im leaving my turbo standard??

grandmasterb Grand Master

grandmasterb

Posted
Posted
Was that 20KW gain running a stock turbo at 13P.S.I?? And does anyone know if the amount of boost you can run safely depends on the model of the car? eg series 1 vs series 2 r33?

It depends on what car it is, what mods it has (if it isn't stock) and the over all condition that the car/engine/turbo is in. Every car is different, there are no 2 the same. A mate has the exact same car as his brother, one is a 89 gts-t and the other a 90 gts-t, now we are talking 3 months between build dates of them.

They are exactly the same, stock as a rock bar a aftermarket pod, and a end can. Both are stock internals and running gear yet one has 42 rwkw more when put on the dyno.

Why, who know's it could me a number of reasons, the tubro life and engine condtion, stock intercooler, the point is that no two cars are the same, therefor you can't base them as the same.

Sure you can use it as a guide line and go from there but what works for one doesn't mean its going to work for the other :cheers:

predator Grand Master

predator

Posted
Posted

Could be to do with the R33 ECU being very prone to dropping timing when intake temps get up. Seems like the R32 doesn't mind so much?

I just bled up my boost to 13psi after fitting my front mount, but I can barely feel any noticeable difference as everything else is stock bar a k&n panel filter. It just drops most of the boost anyhow back to 10psi. Needs exhaust, needs better airflow to the filter...blah.

In other words, raising the boost by itself is pretty pointless.

Cubes Grand Master

Cubes

Posted
Posted

Yer good point, the Rb25 being 9:1 comp would be closer to detonation, high intake temps probably tip it over the edge quicker.

barely any difference with 13psi... lol That stock exhaust must kill the turbo's efficiency, going from 10.9psi (stock boost with 3" exhaust) to 12.5psi I noticed a definite difference.

On stock 10.9psi feels N/A.

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