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boosted e85 afr opinions

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boosted e85 afr opinions

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Old

Mar 13, 2017 | 12:26 AM

#1

russ472

Thread Starter

Burning Brakes

Supporting Member

Joined: Mar 2014

Posts: 1,238

Likes: 203

From: Lexington South Carolina

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boosted e85 afr opinions

trying to set up my initial PE tune for e85. Is commanding .80 lambda (7.82 afr ) a good starting point at 14lbs max boost? Cant find enough information that I would validate as good info.
I don't plan on changing my meth setup.

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Old

Mar 13, 2017 | 09:50 AM

#2

Frans96ss

Le Mans Master

Joined: Jul 2005

Posts: 7,405

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From: New Castle Del.

St. Jude Donor '09

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same as a gas scale in AFR in HPT... 1.280 should be fine to start with.

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Old

Mar 13, 2017 | 10:20 AM

#3

Unreal

Team Owner

Joined: Nov 2007

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From: Gilbert AZ

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I run 1.27-1.275 on my flex fuel setup. Was at 1.278 prior to dialing in the tune saturday and settled on 1.275 and let the meth do the rest.

Then again this was 24+psi of boost on e60-62.

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Old

Mar 13, 2017 | 11:58 AM

#4

russ472

Thread Starter

Burning Brakes

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Joined: Mar 2014

Posts: 1,238

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From: Lexington South Carolina

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Quote:

Originally Posted by Unreal

I run 1.27-1.275 on my flex fuel setup. Was at 1.278 prior to dialing in the tune saturday and settled on 1.275 and let the meth do the rest.

Then again this was 24+psi of boost on e60-62.

is the 1.27-1.275 the multiplier you use for PE?

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Old

Mar 13, 2017 | 12:24 PM

#5

lt1z

Melting Slicks

Joined: Oct 2007

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I usually start around .78 and tune from there

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Old

Mar 13, 2017 | 01:09 PM

#6

Unreal

Team Owner

Joined: Nov 2007

Posts: 24,035

Likes: 2,342

From: Gilbert AZ

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Quote:

Originally Posted by russ472

is the 1.27-1.275 the multiplier you use for PE?

Yep. Then again my actual target AFR with meth I shoot for is 10.8-11.0.

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Old

Mar 13, 2017 | 06:06 PM

#7

Milan

Safety Car

Joined: Jan 2008

Posts: 4,797

Likes: 52

From: Boise

Default

Quote:

Originally Posted by lt1z

I usually start around .78 and tune from there

0.78 lambda I hope, not eq ratio....

1.28 for those people reading who are going to put in a value in HPT

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Old

Mar 13, 2017 | 08:09 PM

#8

schpenxel

Race Director

Joined: May 2004

Posts: 16,667

Likes: 1,209

From: Raleigh, NC

St. Jude Donor '15

Default

0.90 lambda should do nicely

Just kidding

Been doing more like 0.82 lambda on mine

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