Dave's Evo X Build/The Life of Dave blog - Page 140

**Murlo26** · 05-13-2013

Well, the evo world isn't ending, I was in a bad mood before, much better mood tonight!

Good progress tonight for sure!

Idle/cruise are working again! YAY! With the map/rom scaled to handle 750whp or whatever haha. We were maxing load and after we scaled it, shit hit the fan.

Basically had it running solid on SD...then put MAF back in, now the car purrs with both. SD was nice but still left something to be desired on certain conditions, maybe it can be perfect with more work but with remote tuning its impossible to explain some stuff. Now with the MAF doing work again the car idles/drives as good as I expected it could and then some.

Trims are almost fully dialed in and we are moving on to partial boost stuff. Still something up with fuel system it looks like, apparently he has to add more fuel to this than anything he has ever seen, no idea what is wrong but might be troubleshooting the fuel system soon.

progress...

**scheides** · 05-14-2013

Woo maf! Nice!

**Murlo26** · 05-14-2013

Quote:

Originally Posted by scheides

Woo maf! Nice!

I was hoping to not use MAF, but the transitional areas between boost and shifting and some of idle just were tough to get right with only MAP. Once MAF came back it stopped the big swings and it just worked well.

Maybe there is a reason mitsu used both

They MAF/MAP calculations are all lined up now and its pretty smooth. Still not perfect but pretty dang for for a 700whp as you said haha.

**Murlo26** · 05-14-2013

Well the car is ripping now

Still fine tuning the car, I have another graph after this one but it doesn't make sense. The fuel down low is cleaned up on the newer maps and we are upping boost up top a bit for a flat 32psi. But here is where we are at now, time to clean it up and enjoy it.

Ps, we did break 800whp one time...but I won't talk about that lol.

Here was the last log I took, which seemed strange, not sure what happened, but AFR is getting close to dialed in now.

Going to try and get a few runs to get some consistency tomorrow or maybe later this week. I am satisfied for now, the car rips!

93gtpeater · 05-14-2013

Only 32 psi. Crank that bitch up. Glad to see you got this almost dialed in and your not having any major problems. Hopefully this summer the car will be good to you. Once you get beast all dialed in what are the next mods your planning. PS crank boost up to race liter bike

**Murlo26** · 05-14-2013

Quote:

Originally Posted by 93gtpeater

Only 32 psi. Crank that bitch up. Glad to see you got this almost dialed in and your not having any major problems. Hopefully this summer the car will be good to you. Once you get beast all dialed in what are the next mods your planning. PS crank boost up to race liter bike

IDC is at 72% right now so we will see how much further fuel will go. I am guessing we are getting close to the point where more boost will raise IDC and fuel will stop adding...

We are going to flatten boost out to 32psi first, then maybe i will go 34psi. I don't want much more than that for now. When i go surge tank and BAP I will try something near 40psi...but not any time soon.

Liter bikes, I don't think I am fast enough for those..i don't think anyway.

93gtpeater · 05-14-2013

If you can make 800 plus on a dynojet and be do nlts I think you could pull on liter bikes up top. You can always try and find out. Haha. Looking good tho. Wish I could get a ride in it some time. We should have a mini cruise some weekend.

**Murlo26** · 05-14-2013

I am sure the setup has 800ish in it if i go around 40psi, to get a solid "real" 800whp on a dynojet. Right now these are just virtual dyno numbers and I don't ever put a ton of stock in them. The car is for sure fast and I think is for sure 700whp+ but not sure how deep into them.

The X doesn't have true NLTS yet, you can do some stationary rev limit stuff to get it but I'd prefer to wait. Or shift ron style, power shift it.

I will give rides out when it's ready to beat on and consistent.

**goodhart** · 05-14-2013

Nice power! Have you been getting e70 still at the pump? Just curious, cause once the mix changes it is going to lean out even more, which will mean more tuning. Or are you already planning for that?

**Murlo26** · 05-14-2013

I dunno...even here we didn't see a count of knock, I think we are on real e85.

Same road as others....lean is mean lol. It was the 1st pull on rescaled map, we fixed it right away.

We will tune more if it starts going lean. I monitor AFR's pretty close.

evotuner · 05-15-2013

My zeitronix has been reading about E73/E74 down in Mankato.

**Tachyon** · 05-15-2013

800 WHP and it looks like you have more pump left

**asshanson** · 05-15-2013

Murlo you really need an ethanol tester haha. Tune to mid 11's on E70 and let'r buck at low 12's on real E85.

Edit: I forgot to mention, when I had fuel pressure issues on my V, it would go to 15:1 and never see knock, that was spring so it could have been less then E85. Granted it was only running 10psi but still, I wouldn't guarantee you have full E85.

**scheides** · 05-15-2013

These guys have a pretty good point, there's no way we're on real e85 yet...you should really richen up the tune so when you do see real e85 AFR will rise to where it is now.

**Murlo26** · 05-15-2013

Quote:

Originally Posted by scheides

These guys have a pretty good point, there's no way we're on real e85 yet...you should really richen up the tune so when you do see real e85 AFR will rise to where it is now.

I will monitor and adjust as necessary. If it starts climbing we can adjust later.

My car seems to run WAY better at 12-12.5AFR's and that is not uncommon for E85 from the stuff I have seen. That being said I still like aiming for 12 flat like we have now. Then when it starts leaning out we will adjust to keep 12 and then I can leave it for when e70 comes and it will richen up.

**Shane@DBPerformance** · 05-15-2013

Are you sure your wideband is reading correctly. The power difference between 11.5 and 12.5 shouldn't be much and the start of your run looks very lean, you sure it isn't reading a point leaner than it really is or something?

**Murlo26** · 05-15-2013

Quote:

Originally Posted by Shane@DBPerformance

Are you sure your wideband is reading correctly. The power difference between 11.5 and 12.5 shouldn't be much and the start of your run looks very lean, you sure it isn't reading a point leaner than it really is or something?

Pretty confident, a few weeks ago when I was on MAP's dyno we confirmed they were reading pretty close compared to the dyno's wideband.

I am not confident it's 100% but I think its pretty close.

I also would take these graphs with a grain of salt, I haven't done any back to back runs to average it out or confirm what the car is doing on a consistent basis. And as I said the road isn't very flat so the 800 is for sure flukey I think. I can maybe believe the 750 but the 800 I think is road error or something.

My car has pretty consistently shown though that it likes 12-12.5 and seems to like 12.5 quite a bit and honestly when its leaner like that the car actually feels smoother and obviously faster. My car hated low 11's for some reason, seemed to bog and sputter some.

Knoxville · 05-15-2013

Just curious, during install of this turbo you were expecting sub 4K spool up. By the look of the graphs it looks like your building ~30psi around 4600-4700 RPM. Is this because you were encountering the surging at first, or can you speak to this a little more?

**Murlo26** · 05-15-2013

We were able to get it to spool before 4k, but yes it would surge and the motor at the low of an rpm cannot actually ingest the volume of air this turbo creates until higher in the RPM band. So we slowed spool down through mivec and the 3port.

Also, remember this is starting the pull at 3-3.5k rpms, so if I start the pull at 2500 it will be closer to 4k rpms.

Bottom line, its a big turbo and its a little doggy down low, but lets be honest its a t4 turbo haha.

**Murlo26** · 05-15-2013

Here you can see we can spool it faster but it becomes all out of whack when we do:

New log taken over lunch, more boost to go steady 32psi then more fuel, starting to feel very smooth and consistent now.