MMM I'm trying to think why your motor didn't blow. I tune to 11:8 afr on e85

 

Well the timing curve is gradual and not all funky/choppy looking like I've seen on bad tunes in the past. I'm not really familiar with that level of boost/power but for E85 that timing seems very, very, very relaxed. I'm running more timing on a stock 10.6:1 CR H23 on pump/meth. Your AFR appears to be an issue as well, assuming it's not a mistake on the dyno sheet you posted.

Do you have a wideband hooked up? I'd be interested to see a datalog of a pull.

 

That is displaying max afr for the run, probably before he rolled into the throttle.

Op what are your afrs under full boost?

 

<p></p><p>Yeah, and if it isn't a mistake, it explains why his power is so ****.</p>

 

the timing looks really low

 

 

Yes a 6262 is absolute overkill for the power you are making. Something like a 5858 or 3071/3076 would make the same power with a much wider powerband. This is yet another example of Honda owners severely oversizing turbochargers which is something I'll never understand.

But yes you have a serious issue somewhere. Those pressure levels using a 6262 on a healthy setup should yield much much higher power numbers, like 700+. Either your tuner is the problem or it's something like the cams aren't properly degreed/cam gear timing is incorrect, you have a head gasket or ring seal issue, massive exhaust leak pre-turbo, or a huge vacuum/boost leak.

Cam specs

INT/EXH
Ad. Duration: 308/303
Dur @ .050” Lift: 216°/214°
Gross Lift: 11.3mm/11mm
LSA: 109°
RPM: 1100 to 8200
Redline: 8700

Crower describes these as aggressive NA cams. Depending on how much overlap they have that might be part of your power issues or the main cause. You might need to play around with using the cam gears to dial out some overlap. Granted the stock ports aren't helping you any at this kind of power level.

Have you done a compression and leak down test? That will show the health of the engine and could show potential issues like poor ring seal, poor valve seal, improper cam or mechanical timing, and so on. What is your base timing set at? Is that value syncd to the ecu?

You have enough fuel pump and injector to support much more power than you're currently making but have you checked your fuel filter to see if it's clogged? I'm assuming your base pressure is properly set?

You need to start going over every aspect of the engine, turbo system, and engine/fuel management.

 

Really lol. There is no way in **** that his motor would have lasted past that dyno session running 15.5 afr at 20+psi

 

That's the dyno sheet from my tube so it has to be what they set it at. I'm going to do a compression test and leak down tomorrow my base fuel pressure is at 30psi.

 

No tuner in their right mind is going to target 15.5-1afr in boost. Do you have a wideband in the car? If so what are your afrs in boost?

 

I have not degreed my cams or messed with my cam gears whatsoever and that was my next step but now I'm all sketched out to even drive it lol.

 

I could go check my afr is in boost but I'm kinda iffy about getting into boost now

 

Just let off if it's lean in boost. I highly doubt your actually running 15-1afr in boost, idle and cruise maybe, but not boost. You should data log a couple pulls.

 

Go into the s300 menu and find the boost cut setting. set that to the lowest psi you can

lower your boost as much as you can and do a couple runs and slowly bring the psi in watching the afr or datalog it and check.

should be in the 11's

 

Agreed. Go do a light throttle pull in 5th gear and watch your AFRs close as you get into boost. If it looks lean just get out of it. I suspect your tune has something to do with the lack of power. Your timing looks way too low to me, especially for your setup and fuel.

 

I didn't try to oversize my turbo at all I had a 5857 and sold that to get the 6262 wanted to make more power. Otherwise i would of just kept that turbo. I can do a pull tomorrow and datalog it and put it up here just getting a little nervous now hearing all this.

 

Thank you so much everyone I know I don't know the most about tuning that's why I thought I paid someone who knew about it. I will do a 5th gear pull tomorrow after work and datalog it for you guys. I really do appreciate all the input and help. I just thought I was running way to much boost for not much power. Now I'm getting a little stressed and scared to blow my **** up

 

Do a 3rd or 4th gear full boost pull and log it. Just let off if your afrs are not in the 11s once your in boost.

 

I'll get a datalog tomorrow under boost and if I'm not in the 11's af I'm letting off for sure. I'm not trying to dog my tuner because he definayely knows way more than me I just wanted to post this up here to the honda guys and see what they thought

 

Just attach the file. Go to "Go Advanced" and post the tune. That would be easiest... and no, that's lean for E85 unless you are cruising. Everything else wants to be richer in my experience (idle, WOT, etc).

 

This is my actual dyno sheet the picture I had up before was the screen at the dyno. Showing my af in boost is 11.43 and continues to go down when I hit 26lbs

 

Thats better lol


My bet is on cam or mechanical timing

 

I'll get my cams degreed in and check my timing one more time. The car runs great and 426 feels nasty I just thought it was weird I wasn't making a lot of power with a lot of boost on that turbo.

 

I will attach my tune tomorrow when I get off work and let me know what you guys think. Once again thanks everyone I really appreciate all the help and will start with my mechanic timing again and getting my cams degreed in. Thanks everyone

 

I made around 600whp on 30 lbs on an almost Identical setup. The only difference is I was running a Victor X intake vs your Pro series Skunk2. But that only really shows where the powerband starts to fall off up top, not super low numbers in general. My Cams are 0/0. My ignition table is very similar also, I dont see a problem with that unless he never synced the distributor with the ECU but that is some tuning 101 ****.



There is definitely something major being overlooked here...