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 Old 10-06-2011, 07:43 PM   #1481

 
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At this point I am actually wondering if the stock hotside bored out might be freer flowing than the ATP2871. I am seeing significantly higher massflows on my setup than Dano's and I don't think I can attribute it all to a steedspeed vs DNP issue.


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 Old 10-06-2011, 08:09 PM   #1482
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now that was just below the belt!!!

a kick to the head and I had a knee on the mat!
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 Old 10-06-2011, 08:09 PM   #1483
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Guys, I think we'll be seeing another K04/E85 car get dialed in on the dyno before too long. Most of my effort right now is to get @glorifiedbozo's car tuned up pretty well and then we may meet up for some dyno time very soon.

If we end up meeting up for dyno time, I'm throwing my car on to test the winter blend timing numbers
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 Old 10-06-2011, 08:10 PM   #1484
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hard to keep up with ya but are you on 5050 now or back to 100% E?
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 Old 10-06-2011, 08:21 PM   #1485
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No, sorry...I haven't been keeping up a ton, either.

I am running straight E85 and I plan to continue running straight E85. After this past week when I broke down the HPFP and didn't find black death, I'm relieved and motivated to see where things end up with straight E85 over time.
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 Old 10-06-2011, 09:00 PM   #1486
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right on brotha!
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 Old 10-06-2011, 10:01 PM   #1487

 
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Originally Posted by Dano View Post
now that was just below the belt!!!

a kick to the head and I had a knee on the mat!
Just thinking outside the box, we don't have a solid number for what the stock A/R is. At the top end it shouldn't matter what manifold you are using, and our setups are very similar other than that. I don't even have meth.

Keeping it somewhat on topic, running a 3/9 mixture has thus far provided the following improvements over straight pump:
+6.5* timing
.7 leaner (11.3 ->12.0)
EGTs reduced by 100*
+~50hp as indicated by VD

I do not have meth, so all fueling is from my injectors, and my IDC varies between 85-90% depending on the temperature. Still in the process of adding timing, I am also going to try to lean it out another .25 at least. I would like to lean out to 12.5.


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 Old 10-06-2011, 10:34 PM   #1488
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^^^ are you running a DNP EM?
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 Old 10-07-2011, 07:00 AM   #1489
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yes hes running DNP...

so Ziggo those observations are interesting and prove that it doesn't take much E85 to increase HP significantly....you are basically removing the knock limitation from the motor which opens up a whole other world of possibilities.

The added cooling effect is a bonus.

now back to GT28 vs. BNR S3

I was under the impression the hostside AR was smaller on the BNR S3 due to it being an OE housing that is machined out. Also..your intake/maf cal could explain more g/s than mine. not saying you aren't actually flowing much more than I but just trying to remove the variables.

what voltage are you running? I am right at 4.8.
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 Old 10-07-2011, 03:19 PM   #1490
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GTX3071 on order...hopefully I will get it installed next weekend...

I will have an EGT gage as well.

Anyone have a recommendation on the EGT gage?
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 Old 10-07-2011, 03:33 PM   #1491
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i'm jelly fo sho...enjoy the build 12pk!

who wants to bet 12pk will squeeze 450ish out of the GTX3071?
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 Old 10-07-2011, 04:00 PM   #1492
 
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Originally Posted by Dano View Post
who wants to bet 12pk will squeeze 450ish out of the GTX3071?
I hope I hope I hope...
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 Old 10-07-2011, 05:09 PM   #1493
 
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Originally Posted by cld12pk2go View Post
GTX3071 on order...hopefully I will get it installed next weekend...

I will have an EGT gage as well.

Anyone have a recommendation on the EGT gage?
Looks like we're gonna have a battle on our hands for highest hp MS3 in Ohio...
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 Old 10-07-2011, 06:38 PM   #1494
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So, another fun story for you guys:

My closest E85 station went to winter blend E70....and I adjusted my maf curve for it...ran it for a couple tanks perfectly.

Filled up last night at a different station......apparently they hadn't switched to winter blend, because I saw 13.5:1 at full throttle today.

And - it ran beautifully I went ahead and flashed my E85 tune back on, though, cause I'm not totally comfortable with those timing values running that lean...
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 Old 10-07-2011, 06:45 PM   #1495
 
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Originally Posted by phate View Post
So, another fun story for you guys:

My closest E85 station went to winter blend E70....and I adjusted my maf curve for it...ran it for a couple tanks perfectly.

Filled up last night at a different station......apparently they hadn't switched to winter blend, because I saw 13.5:1 at full throttle today.

And - it ran beautifully I went ahead and flashed my E85 tune back on, though, cause I'm not totally comfortable with those timing values running that lean...
A taste of the dark side you have gotten... fyi I switched backed to mid 12's for now too cuz 13+ just sou ds scary no matter how amazing it runs lol
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 Old 10-07-2011, 07:38 PM   #1496
 
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You guys know that the DI Cobalts have been running 13.xx AFRs on e85 with nice results for a good while now, right? Every motor is different, but it's food for thought.

EDIT: Also, on e85 they are making 375whp and 400wtq on a 2.0L motor with a slightly better K04. I think that the fact that phate wasn't seeing any gains from .81 to .83 lambda (indicated 11.91 and 12.20 AFR) may have had more to do with the K04 being maxed out than leaner AFRs not helping. We need a BT guy with no airflow restriction to give this a shot to really draw a conclusion IMO. If the better turbo on the Cobalts is maxing out at 375whp on e85, then phate maxing out our turbo with a slightly lower number would make sense.
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 Old 10-07-2011, 09:59 PM   #1497
 
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Originally Posted by Nataphen View Post
You guys know that the DI Cobalts have been running 13.xx AFRs on e85 with nice results for a good while now, right? Every motor is different, but it's food for thought.

EDIT: Also, on e85 they are making 375whp and 400wtq on a 2.0L motor with a slightly better K04. I think that the fact that phate wasn't seeing any gains from .81 to .83 lambda (indicated 11.91 and 12.20 AFR) may have had more to do with the K04 being maxed out than leaner AFRs not helping. We need a BT guy with no airflow restriction to give this a shot to really draw a conclusion IMO. If the better turbo on the Cobalts is maxing out at 375whp on e85, then phate maxing out our turbo with a slightly lower number would make sense.
Ive been running low to mid 13.xx AFRs these past few weeks. Not on purpose tho bc of the bpv leaking lol. New one is on its way. But my engine is still in one piece so far. But im still on both stock manifolds. Hopefully ill get half of that problem resolved with my tax return and a DNP manifold.
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 Old 10-08-2011, 02:06 PM   #1498
 
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Originally Posted by Nataphen View Post
EDIT: Also, on e85 they are making 375whp and 400wtq on a 2.0L motor with a slightly better K04. I think that the fact that phate wasn't seeing any gains from .81 to .83 lambda (indicated 11.91 and 12.20 AFR) may have had more to do with the K04 being maxed out than leaner AFRs not helping. We need a BT guy with no airflow restriction to give this a shot to really draw a conclusion IMO. If the better turbo on the Cobalts is maxing out at 375whp on e85, then phate maxing out our turbo with a slightly lower number would make sense.
would it be possible/worthwhile to swap in a k04 from a cobalt into a speed?
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 Old 10-08-2011, 02:11 PM   #1499
 
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I doubt that it's going to bolt right up, so you may as well get a better turbo than a k04 if you go to the trouble of swapping.
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 Old 10-08-2011, 02:50 PM   #1500

 
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And unless you replaced the manifold with a twin scroll its going to spool like a big turbo.... Not worth the trouble.
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 Old 10-08-2011, 02:52 PM   #1501
 
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It doesn't even kinda bolt up lol.
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 Old 10-08-2011, 02:56 PM   #1502
 
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/meh, was more of a question, and not really something i was actually going to spend money on, since nat mentioned that they maxed out with higher numbers on a cobalt
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 Old 10-08-2011, 07:51 PM   #1503
 
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Holy shit....it took me three days to read this thread in it's entirety on my iPad. I haven't been able to look at all the tables and graphs you guys have posted but I thought I'd post what I'm seeing.

I put in 6 gallons of E85 and then topped the tank off. At the same time, I loaded up a map that increased my MAF by 15% across the board.

My trims are -4 for the most part, -10 when I let off the gas

I'm targeting 11.8 AFR at WOT and I'm pegging on it, no problem while hitting 20 PSI.

Car is running very well but since I scaled my MAF, now my g/s and load is all increased and thus I'm not getting to the timing values I usually do. I'm only seeing 15.5-16* at RL as compared to 18* on 93 (no meth!)

So, my question is, if I continue to do a perfect 50/50 mix of E/93, can I just target a leaner AFR and go back to my first MAF cal so I don't have to change everything else that is load based?

I know we went over this already but my mind is cracked out from reading this thread fir the last 3 hours...

Also, I got a cell today concerning the MAF. Can't remember what it was so I'll update this when I get back into the car...
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 Old 10-08-2011, 10:07 PM   #1504
 
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Originally Posted by XLT_66 View Post
Holy shit....it took me three days to read this thread in it's entirety on my iPad.
If you'd read it on a PC, you could have finished in three hours.

I believe that you should be able to lean out your AFRs without scaling the MAF. I haven't had a chance to play with all this yet, so I'll let one of the gurus give you the go ahead nod.
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