Still haven't hit the dyno but I will have some good maps in the next couple weeks.

 

Would do you guys think should happen with larger cams?
In the evo 9, for reference, with bigger cams i used to run more
advance in the intake camshaft.
I would assume i should run more adv. on the intake and more retard
On the exst with larger cams as a starting point?

 

That is likely correct although you really need a dyno to see which way it wants to go for more power.

Today I was troubleshooting why my injectors seem to be causing some misfire codes. Just in case the Mivec was too aggressive I reduced all intake mivec to 10* and all exhaust mivec to 0* to see if the misfires go away.

Talk about a dog... the car feels like a lag monster with 20 psi in 4th hitting 600-700 rpm's later than my full Mivec maps. I did get on the dyno right before the 2011 One Lap event and will post what mivec maps I ended up using shortly. So basically GTX30 with full mivec spools 20 psi in 4th by 3800 where as zeroed out mivec is closer to 4400-4500 rpm and absolutely gutless below that point.

 

^Stock cams? I thought with bigger/aggressive cams you would reduce overlap compared to stock? My kelford 214b's have overlap already built in and mivec modification is finicky. If I zero out the exhaust from 6500-8000 @ 200 load on up I get a 2-3 psi boost spike...so weird. I wish I had access to a dyno to see whats up. Road tuning up here in Alaska sucks haha.

 

usually a boost spike means there is a new restriction

if your only adjusting MIVEC then your probably making a bit less power.

yes very hard to diagnose on the road

 

With my MX1s & Dom 2.0 I have to tune down the MIVEC quite a bit to prevent it from surging in the high load areas. My exhaust side is pretty much zero'd out in my WOT zones and my intake goes from 28 degrees gradually dropping to 15 by 7000 RPM.

 

I switched over to these MIVEC maps this week from Gunzo's original maps and I can tell a significant difference in spool up. Overall boost feels to come in a lot smoother, also this seemed to alleviate a nasty 3rd gear overshoot problem I was having, this map switched the valve overlap in the 3.5k problem area I was having by about 20 degrees. It didn't eliminate it but it certainly made it much better. I made some minor tweaks to fueling and timing to accommodate this, not too much however. I am going to tweak it a bit over the next few weeks and see if I can get it to smooth out a bit more in 3rd.

 

Any news on this? Your help/work is much appreciated!

 

Bump for updates from Hiboost

 

Still running this and really like it. Tweaked it a bit for my setup but still a happy camper.

 

Sorry guys I've been pre-occupied by quite a few different things as of late.

Namely my car had an engine fire and the insurance company totaled it out.

I have a new 2011 Evo X MR hopefully arriving next week and I'll be scrambling to get it back to the 400 crank HP level initially and then back to the 600-700 range after some heavy modifications.

I'll post the maps I used with my GTX30 tonight no fail! The dyno sheet is on this page for now: http://www.teamiglooracing.org/?page_id=51

But soon that page will be placed into archive status given that the car is no longer.

 

Here is what I was using with the GTX30 turbo combo I had on the car, seemed to work well for me to get great spool and also power down the straights at Daytona at speeds of 165mph and 8000 rpm.



Base ROM if you want to copy and past the maps: http://www.teamiglooracing.org/?attachment_id=796

(rest of the rom is bone stock 08 maps)

Keep in mind that if the values are more than a 5* change over your current maps then you will want to verify AFR and timing is still in check with zero knock. These ended up being right on the edge of the surge line at 3600-3800 rpm in 5th but nothing more than a slight flutter noise so nothing dangerous. That one strip of extra exhaust retard was for quicker spooling between shifts when going all out and spooling at the line with the stationary limiter.

 

Hmm, so I am running an FP Green - you think I can get that aggressive on my mivec maps? May give them a try this weekend and see how it all works. Need to install and tune my FIC 1100's on 93 octane first though.

 

I tried these and got some decent results, but nothing spectacular. Trying out some different MIVEC maps now to see how those do.

 

Sorry for bringing this back from the dead but after reading through this I would like to see more talking on the tuning of Mivec and sharing of maps. I know that the IX had a thread that practically got stickied on tuning Mivec.

I was actually reading through the service manual and I found it interesting that it outlined the limits for Mivec in there. Like it has been said the limit for intake are 10-35 and 0-35 for the exhaust. But what I found interesting is that in order to actually create overlap you need to have the exhaust have a higher number than in the intake so if you retard and advance all the way to 35 it just makes it so that the intake opens just as the exhaust closes at 35* ATDC.

So if you really want to create overlap either just leave intake alone and retard exhaust or just not advance it all the way. Sorry if that had been addressed and I just brought this back from the dead for no damn reason.