Can you adjust fuel or timing per gear change?
10-12-2005, 01:46 PM
#1
Moderator
Thread Starter
Can you adjust fuel or timing per gear change? My AFR is RICHER in lower gears, and leans out in the higher gears per RPM. This seems to be a natural occurrence of more fuel needed at that speed + the RPMs.
So, if anyone can tell me how I could increase fuel specifically for each gear, I'd appreciate it.
Also, come to think of it, is there a way to change timing depending on the gear? I can handle more timing in the lower gears than the upper gears.
Also, I'd like LESS timing in 1st gear for a given RPM (to gain more street traction), yet full timing in 2nd (best pull), and a bit less timing in 3rd (more susceptible to KR). Though, I think what I REALLY need in 3rd gear is more fuel.
Is any of this possible?
Thanks!
So, if anyone can tell me how I could increase fuel specifically for each gear, I'd appreciate it.
Also, come to think of it, is there a way to change timing depending on the gear? I can handle more timing in the lower gears than the upper gears.
Also, I'd like LESS timing in 1st gear for a given RPM (to gain more street traction), yet full timing in 2nd (best pull), and a bit less timing in 3rd (more susceptible to KR). Though, I think what I REALLY need in 3rd gear is more fuel.
Is any of this possible?
Thanks!
10-12-2005, 01:56 PM
#3
TECH Addict
alot of it is based on load.
less load in the lower gears. so your need for fuel is less and it can tolerate more spark, higher gears more load, more need for fuel and cant tolerate as much spark
map out where your seeing low load vs high load and tweak accordingly, with a little work I am sure you can find a nice balance.
less load in the lower gears. so your need for fuel is less and it can tolerate more spark, higher gears more load, more need for fuel and cant tolerate as much spark
map out where your seeing low load vs high load and tweak accordingly, with a little work I am sure you can find a nice balance.
10-12-2005, 05:49 PM
#6
My car used to lean out in the higher gears too. Adding more fuel pump and larger injectors cured it for me. Now my WOT A/F ratio is pretty consistent from 0-150mph.
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2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
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2018 Cadillac Escalade 6.2L A10 Pat G tuned.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2018 Cadillac Escalade 6.2L A10 Pat G tuned.
LS1,LS2,LS3,LS7,LT1 Custom Camshaft Specialist For custom camshaft help press here.
Custom LSX tuning in person or via email press here.
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10-12-2005, 07:10 PM
#8
Moderator
Thread Starter
Originally Posted by Patrick G
My car used to lean out in the higher gears too. Adding more fuel pump and larger injectors cured it for me. Now my WOT A/F ratio is pretty consistent from 0-150mph.
