Well I dynoed again

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Sep 12, 2004 | 01:24 PM

RICE ETR

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From: Virginia

Well I dynoed again

Same T66 and TTi intercooler, I just adjusted some of the plumbing and added a heat shield to the top of the IC and anlged it down some more.

at 9psi I made 546rwhp/585rwtq still on 93 octane with alky injection. I am waay out of the map with this turbo still but I could have gone up some more in boost but this dyno session was a last minute thing and I was unable to get my edit cable from a friend I am sharing it with and I was going too lean up top.
I have a question now though. In attempts to richen things up so I could run more boost, I turned my pump speed all the way up. The car didn't seem to bog at all but my airfuel both on my incar WB and the dyno said the same thing, flat lined at 10:1 from 4-5k rpm (probably was in the 9:1 area but the WB doesn't read that low) then the AFR ends up around 11.3-5 up top. Now my question is, is my AFR really at 11.3 or is it actually leaner because of the methanol's stoich being lower than gasoline? In otherwords am I safe at 11.3 or should I be richer? I guess the right way to do is to figure out how much I am spraying and do the math. Anyone done this before?

I will have the graphs up in a little while.

Thanks for any input.

-Jarrod

Sep 12, 2004 | 01:55 PM

Tiago

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From: HOUSTON-TX

very nice

Sep 12, 2004 | 01:56 PM

MECHAM

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From: Colorado Springs

11.3 is nice and safe

Sep 12, 2004 | 10:22 PM

RICE ETR

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From: Virginia

Thanks Tiago

Now get back in the garage and get that thing back together!

Quote:

11.3 is nice and safe

Well I am curious if that 11.3 is actually 11.3 due to the meth I am spraying... or is it really much leaner?

Sep 13, 2004 | 12:02 AM

MECHAM

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From: Colorado Springs

Quote:

Originally Posted by RICE ETR

Well I am curious if that 11.3 is actually 11.3 due to the meth I am spraying... or is it really much leaner?

it is much leaner than 11.3 without the meth. you have a good tune for 9psi..leave this setup as is.

what i would suggest is dial back the boost 4psi if u can..stop spraying!
see what the A/F is..im not sure what spring is in you WG

weird how u have to spray and add 93 for 9psi..im getting ~12psi on just 91 octane

Sep 13, 2004 | 12:24 AM

y2khawk

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From: Olmsted Falls, OH

Can your wideband ready in Lambda?

Then the fuel in question doesn't matter, lambda is lambda reguardless of fuel used.

Sep 13, 2004 | 12:40 AM

RICE ETR

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From: Virginia

Quote:

what i would suggest is dial back the boost 4psi if u can..stop spraying!
see what the A/F is..im not sure what spring is in you WG

I'm definitely not going to stop running the alky injection.... this stuff is the best thing since sliced bread

and it's a 7# spring.

Quote:

weird how u have to spray and add 93 for 9psi..im getting ~12psi on just 91 octane

what's your compression? Also you have that saaaweet a/w intercooler...I've seen MM's IAT numbers.... it works like a champ!

Quote:

Can your wideband ready in Lambda?

Then the fuel in question doesn't matter, lambda is lambda reguardless of fuel used.

Well it's an AEM unit and I think it can display it, have any idea how to set it so it will? I guess I would be looking for a lambda of .75-.78 or so.... 11.0-11.5afr?

Thanks for the help.... oh and nice wheelie!

edit.. oops