Callin out hondarider552

McRat

Diesel Hotrodder
Aug 2, 2006
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Blind the IAT retard table (all zeroes), move the shift points up (or remove limiter), copy the "good gas" timing table to the "bad gas" table, then feed it race gas.

Try to get the O2 sensor (front sensor) at about .89v at WOT by tweaking the fuel enrichenment table.

These simple steps will drop a 1/2 second or more off an LSx engine, and might work on the Ecotec.
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
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Blind the IAT retard table (all zeroes), move the shift points up (or remove limiter), copy the "good gas" timing table to the "bad gas" table, then feed it race gas.

Try to get the O2 sensor (front sensor) at about .89v at WOT by tweaking the fuel enrichenment table.

These simple steps will drop a 1/2 second or more off an LSx engine, and might work on the Ecotec.

Thanks pat! Ill give her a try. :woot:
 

hondarider552

Getting faster
May 28, 2008
10,627
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Arizona
Blind the IAT retard table (all zeroes), move the shift points up (or remove limiter), copy the "good gas" timing table to the "bad gas" table, then feed it race gas.

Try to get the O2 sensor (front sensor) at about .89v at WOT by tweaking the fuel enrichenment table.

These simple steps will drop a 1/2 second or more off an LSx engine, and might work on the Ecotec.

went from 9.5* timing at WOT in low octane to 15.5 with high octane. :woott::woott:

james, Loves truckstop across the street sells 105 unleaded. Might throw a few gallons in :happy2:

TQ reduction is off, line pressure is up, and shift times are bumped down a hair.
 

hondarider552

Getting faster
May 28, 2008
10,627
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So, make all the -6*, 4, 3 & 2* zero's?

probably explain why my colorado feels slggish when its freakin hot outside right now.
 
Last edited:

SSchmi5519

LLY Cult Leader
Oct 19, 2008
3,387
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The 2.2L OS actually supports a table that has on demand AFR to octane rating. We're running it a little richer than 14.7 :thumb:
 

McRat

Diesel Hotrodder
Aug 2, 2006
11,249
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www.mcratracing.com
Yes, zero out the IAT.

You need to datalog the KR (Knock Retard). 2° KR is OK, and doesn't seem to have an effect. That's about where peak power is.

LS1's like about 22-28° total advance at max effort. Timing is in a gentle curve, low-high-low, with the high being at the peak torque. Timing depends on compression and head design, the higher compression, and better the heads, the less timing is used. They also like about 12.8:1 AFR at max scream.
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
21,689
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Yes, zero out the IAT.

You need to datalog the KR (Knock Retard). 2° KR is OK, and doesn't seem to have an effect. That's about where peak power is.

LS1's like about 22-28° total advance at max effort. Timing is in a gentle curve, low-high-low, with the high being at the peak torque. Timing depends on compression and head design, the higher compression, and better the heads, the less timing is used. They also like about 12.8:1 AFR at max scream.

Awesome! ill be logging info tonight. i think a track trip is in order this weekend brian. Lets see what we can do with these little gassers :D.
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
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Picked up a set of 4.10's for cheap tonight James, might wanna spray it before I beat you again:D

:rolleyes: i highly doubt you will have them setup and in the truck by friday queer boy. Do you even know how to setup backlash or pinion debth? :roflmao: :D
 

SSchmi5519

LLY Cult Leader
Oct 19, 2008
3,387
1
36
Arizona
Yes, zero out the IAT.

You need to datalog the KR (Knock Retard). 2° KR is OK, and doesn't seem to have an effect. That's about where peak power is.

LS1's like about 22-28° total advance at max effort. Timing is in a gentle curve, low-high-low, with the high being at the peak torque. Timing depends on compression and head design, the higher compression, and better the heads, the less timing is used. They also like about 12.8:1 AFR at max scream.

We've got the mini-hearse running about 13.1 :thumb: :joker:

I'll be up in Phx on Thursday/Friday for another doctors appt. Let me know if you guys want to go to the strip.
 

Chevy1925

don't know sh!t about IFS
Staff member
Oct 21, 2009
21,689
5,845
113
Phoenix Az
We've got the mini-hearse running about 13.1 :thumb: :joker:

I'll be up in Phx on Thursday/Friday for another doctors appt. Let me know if you guys want to go to the strip.

Im pretty set on it. How about your panzy a$$ brian?? :D



Funny how brian and i are now lining up TWICE yet Nick and anthony cant even get their trucks to race, let alone be next to each other :angel: :hug:
 

gmduramax

Shits broke
Jun 12, 2008
4,073
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Nor cal
Im pretty set on it. How about your panzy a$$ brian?? :D



Funny how brian and i are now lining up TWICE yet Nick and anthony cant even get their trucks to race, let alone be next to each other :angel: :hug:

Whoa hold on now. I'm at the track racing almost every Wednesday. It's Nick that never races. He's scared to line up with me.