hey guys! im new here obviously and i need help adjusting from the honda world to the world(so please dont get mad at me)

before i say anything else, i did infact read "the 'official' evo modding for dummies" thread(i did, i did) but just want to clarify some things/make sure i understood everything.

i read that using any aftermarket intake will cause rough idle/bad driveabillity for the evo8. does this mean most of you guys use the stock intake/filter box? if not, HOW bad is it?

also, is an ecu reflash ABSOLUTELY needed after intake/tbe? i know tuning is always a good thing but is it needed for just i/e?

im only asking because (for a long time being) all i plan on is an intake(unless i'd be better off with a k&n drop-in in the stock intake) and a turbo back exhaust, with boost and wideband (maybe oil psi/water temp) gauges just for safe measures.

would everything be fine with say an open element k&n intake and 3" turbo back exhaust "untuned/flashed" or would i NEED to get a reflash?

thanks guys and sry for the long noobish post

 

I would go with a drop in, as for the exhaust I was over boosting at times with out a manual boost controller, get a walbro 255 and then get it tuned. its cheap and its quite the bang for the buck! GL

-3in TBE
-Drop in K&N
-Hallman Pro MBC
-Walbro 255

(IX Diverter valve)

TUNE

^^^ Great gains

 

^^^^^what he said

 

+1
i had fuel cuts at around 5000rpm due to my 3'' tbe with stock ecu and an intake, but that was depending on the outside temperature, noticed that greatly when it was around the 40F.
gl

 

so an aftermarket(open element hard pipe) intake is more pain than its worth?
and 3" exhaust will cause me to over boost/lean out without a tune?

so with the k&n drop in, mbc, 3" tbe, evo 9 diverter and walbro 255 fuel pump i WILL NEED to get street/dyno tuned? or would a reflash suffice?

and thank you guys so much for the help!!

edit: also, could some1 plz explain whats so bad about a bov venting to atmosphere?(never heard it was bad in the honda world, just when i started reading up on dsm's/evo's)

 

The reason atmospherically venting BOV's are a no-no, it that people tend to have problems getting them tuned correctly, and most importantly, the IX BOV already does the job perfectly well and is already set up for your car.

 

The mod list described above sounds very good for a BPU Evo. The stock intake box has been proven to make very good power with only a drop-in. Yes, you can run an aftermarket intake, but some cause drivability issues. That being said, there are many who run an intake without a proper re-tune. To make the most out of the intake though, you will need to get your ECU re-tuned.

Yes, with the exhaust, higher boost, and Wally 255, you will need to get retuned. I think you're getting a bit confused by the whole street/dyno tuned vs. reflash. They are both essentially the same thing. Whatever the case may be, a tuner will change various values in your stock map (timing, fuel, etc) to take advantage of your mods. Also, there are a number of vendors on here that offer e-flashing services where you send in your ROM, and a few logs, and they will work with you to get the car about as perfect as it would be if you were to be tuned on a dyno. To do this, however, you will need to buy/borrow a Tactrix cable and use your laptop with EvoScan/MitsuLogger and ECUFlash. If you'd like more info on this, you should search the ECUflash section of this site. I'd suggest Mellon for e-flashing (he's a vendor on here).

Good luck

-Alex@ECS

 

so i'd probably be better off just getting it dyno tuned then?

also, is there an aftermarket intake that wont give me idle/ drivability problems?

 

Do those mods, and yes get your ecu reflashed either road tuning (what i prefer) or a dyno tune. Modifying without a tune is pointless. You mite as well stay stock, since your untuned computer wont be calibrated for the new upgrades.

 

im also fromt he honda world, every kid tuner thinks intake/header exhaust and kpro is winning.

in the mitsu, its the TBE, MBC, fuel pump tune.

my friend put exhaust in stock evo ix only made 350whp base pull, i guess it leaned out the car, its always safe and recommend you be tuned

 

wow 350whp from just an exhaust?? does he have a freak IX motor? lol. JK


I live by my K-series and My 4g63.

Start with TBE, manual boost controller, fuel pump, and tune it and it will be a great difference. I agree, dont get a BOV, thats just eh (sorry who ever swears by changing that to an HKS or RFL nice sounds but makes no difference.) The car will become a little sloppy if you do that, and from my exp with intakes, it can be a hit or miss. But from what i remember the stock box will handle up to almost 400??? with a drop in filiter and tune right?
Save the money from the intake and save towards something better. Good luck with the modding. would like to see what you come up with!!!!

 

This is good advice. Stick to what's tried and true and you'll be fine. If you really must get an aftermarket intake, I'd suggest either the Perrin complete unit or the Amsoil filter w/ Vibrant adapter.
Good luck
-Alex@ECS

 

thanks for the vote of confidence Alex, much appreciated

 

+1 on what a lot of the guys have already said.

Go with the drop-in filter, and the TBE, MBC and a reflash are a great starting point. Sure you can say the tune isn't ABSOLUTELY necessary... but you won't reach the full potential of the mods till you have it done.

 

These are good mods, but I would make sure to get an ETS LP2 Lower Intercooler Pipe. The gains are worth 12-18whp by just changing out the stock restrictive lower intercooler pipe. We use a 2.5" diameter pipe from the turbo pipe to the intercooler.

You will see a couple threads regarding this pipe in the dyno section.

Thanks!

Michael