Excellent question.

Also, since the IX has a bigger fuel pump, are you tunning the IX's above 20.5 psi (like you were for previous VIII's)?

Thoughts on K&N typhoon system? I jumped the gun and put it on my IX, sounds great! Ever try a Blitz SS filter? We have seen it make more power on the dyno than any other intake on our SCCA E-Production Champion Honda Prelude. I also ran one of these on my 95 GSX, with enough mods to beat a Honda 929RR.

Any recent numbers with recent tunning sessions with TBE, MBC, intake, and DynoFlash on the IX's?

Do we need a MBC?

Good choice on keeping the EVO out for the snow!! Nothing is more fun, with a nice set of Hakkapalitta RSI's of course.

 

Al hates the K&N Typhoon. It's one of the worst intakes for our car. Don't use any other car as a comparison in terms of which intakes are best for the Evo. You can read countless threads on here stating how awful the K&N Typhoon is for the Evo. At the very least, don't use the MAF pipe and just stick with the cone filter.

As of today, Al hopefully will have perfected his boost hose idea that allows him to tune boost through his Dynoflash without the need of an MBC. Previous attempts at modding the IX had shown that retaining the stock BCS while increasing airflow (exhaust/boost) caused the ECU to react by turning down the boost in order to compensate for the detected airflow increase. Apparently, the new ECU was programmed to respond to increased airflow by lowering boost to keep power fairly stable. This was forcing IXs to have to use an MBC to control boost and keep it from being lowered, but Al had an idea to allow IXs to keep the boost controlled by the Dynoflash through the ECU and stock BCS. He tested it for hours yesterday and was hoping to perfect it today.

If we're lucky, the IXs in our upcoming DcEvoClub tuning trip will get to benefit from this new feature.

The IX Dynoflash is very new, so you will need to look at his IX dyno threads from his initial testing in order to see gains with differing mods. The people in FL getting tuned now will have to report back whenever they have time. Not sure how soon they will get on the dyno or get to the track. Up here in DC, we are doing a dyno day before the tuning session and then again after so that everyone can see their gains across the board.

 

I will be responding to this question over the next few hours as I find time

Here A Evo IX MIVEC MAP from A stock Evo IX - (I wont say which Evo IX) this is just for reference so people can see how it looks - this is represented in Ecutek softwear

 

When I first revieved the Ecutek softwear, I strapped a car down at Buschur's Dyno and I spent a full 3 days playing with the MIVEC maps - taing it all the wy down to zero - moving it up - smothing it out - just about every which way you can to find out how it works and what it does

What I found out is that you cant really step on the MIVEC too much in the middle range or your cylinder pressures get too high and the car will start to knock

A happy medium must be found to create loads of low end tq and hold out the TQ as far to the middle of the power band as posisble

 

You will note that at 6500 rpms the intake cam is straight up at 0

R & D found that on stock IX and mildly modified IX adjusting the 6500 - to red line area realized zero change

Most of the gain in TQ can be found through the mid range

The factory settings arenot that far off - however they go in and out to reduce the peak TQ you can feel the effect on a bone stock IX

You can see where they massaged the mid range with a lower area of settings which has the effect to lower the TQ on areas of peak boost

The end result with my tuned MIVEC maps is to smooth out these areas and over all adjust the levels to achive smooth TQ while not over increasing cyl pressure which leads to knock

 

Thanks so much for posting that table! Couple of questions... What are the units of timing and engine load. Is timing in degrees? I know it says % for engine load, but why does it go all the way to 300? Will a stocker just go to 100%?

OT(sorry): Has anyone posted stock tables(AFR and timing) for the VIII? I would LOVE to see those. Obviously, I don't expect to see tuned tables, but stock ones shouldn't be that much of a secret, right?

 

Dam, the typhoon is garbage? Could you tell me more on why? Hmmmm. Lose the induction/MAF pipe? Which systems do you like?

 

Stock is my preference.

Next would be a drop-in filter.

After that, if you absolutely have to get an aftermarket intake (which you don't on an Evo with stock turbo), then get the Buschur intake followed by the Injen intake. However, the K&N cone filter portion should work fine, I think. You'd have to go back and read all the hate threads on the Typhoon to know for sure...

 

As for the intakes go, I have had an HKS drop in, Blitz drop in, K&N cone with stock hose, Full AEM, and what I currently have(which I like the best) AEM pipe w/ Blitz SUS filter.

 

LOL, this was supposed to be the MIVEC thread, not yet another intake thread

j/k ...

By the way, thanks again Al for responding and thanks to LDOGGYDIZZLE for creating a new thread for my questions.

Al - responding to your comments so far ...

I see you've posted the EcuTek view of the stock MIVEC map ... I assume you have the same visibility/control of this map with your Techtom-based flash, right?

When you were playing with the MIVEC settings via the EcuTek software on Dave's dyno, did you see at all if you were able to spool the turbo faster by making any adjustments down low in the RPM range?

And I know exactly what you are talking about you when mention that the factory maps seem to pull a little out around the torque/boost peak. I can definitely feel that on the street (feels bad ... like power is building and building and then suddenly drops off a bit) and you can see it rather clearly on my baseline dyno here at around 3800 RPMs. I assume this is what you have smoothed out with your MIVEC tuning?

Thanks,
Josh

 

Al
+1 here for more info on your boost hose idea that allows you to tune for boost with your Dynoflash. We all want to be tuned by you with the "ideal" setups on our IX's.

Please let us know if you prefer to see a IX with or without an MBC. Thanks in advance, your hard work is appreciated.

 

Al, any more info on the exhaust cam upgrade you mentioned a couple weeks ago?

 

That will be occurring over the next few days after Al arrives home (tonight). It will be on a 2.3l stroker with the stock IX turbo...

 

Bump for Al (or anyone else with a flashed IX). Have people had such good results maintaining higher boost levels without an MBC? I'm really curious about the possibility of maintaining the stock solenoid and controlling the boost levels through the flash, without using an MBC.

 

Here's a thread dedicated specifically to this:

"V4" Boost Controlling Flash option on IX Evos