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Discussion Starter · #1 ·
I've had my 8 MR Ecutek'd, fuel pump changed, and a decat, and I'm going to fit a HKS Racing Suction kit.

Could anyone tell me if, with this mod in place, I need to be thinking about having the car reflashed etc?

Or if not, how much engine modding can I get away with before it'll be beneficial to have the car reflashed/Ecutek'd again?

Thanks

R1 CHR
 

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Hmmm Filters and exhausts can make a lot of differance to the map i would get the fueling checked at least just to be on the safe side.
 

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Discussion Starter · #3 ·
Is that the sort of job that any reasonably competent garage can do?

Will the ECU adapt to small(ish) changes such as a change of induction and/or a change of exhaust?
 

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Hi

Appart from the fun of spending a bit of cash on the car, why are you going to an after market air filter? The induction area is very sensetive to changes in the air flow, not just levels, be the way the air travels around the sensor in the MAF.

MB
 

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Discussion Starter · #5 ·
Does the car not adjust to a different and new method of air supply then?

Are you saying that there are no benefits to changing the standard airbox for an aftermarket induction kit?

And if not, why do such a large amount of people make the change? It's not just a cosmetic engine enhancement is it?
 

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R1 CHR said:
Does the car not adjust to a different and new method of air supply then?

Are you saying that there are no benefits to changing the standard airbox for an aftermarket induction kit?

And if not, why do such a large amount of people make the change? It's not just a cosmetic engine enhancement is it?
Hi

The ECU has maps for higher air flows. But it the way it measurses the air flow that is critical. The MAF measurse the volume of air by straightening the air flow, then inducing eddies in to the air flow, and measuring the number of eddies. More eddies, more air flow, unless you change the inlet, and the ration pf eddies to air flow is changed.

I would not like to make a definitive claim about the stock system vs. an after market one. But a couple of people on here who's opinion I trust have had good results just cutting away a small part of one side of the air box lid see here

Why do people do it on later Evos? Don't know. I'd like to see some before and after dyno runs, with supporting data to prove all that has been tweaked is the MAF scaling and smothing table, along with the fuel trim data. Might be better things to spend your hard earned on, like beer and curry, or a track day, or some low profile wing mirrors.

MB
 

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Apparently, the stock box is very good. Some choose to modify the lid of the standard box to let a bit more air in. Logs show a 2-3kpa improvement baro reading by just cutting the outside edge section of the top lid away. Makes a nice noise also if you like that sort of thing

At least you are not messing with the stock MAF setup.


Edit to say: Bugger :)
 
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