Lean When Downshifting - Cant Fix iT (te 3 bar)
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Joined: Nov 2004
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Lean When Downshifting - Cant Fix iT (te 3 bar)
I got my car running absolutely perfect this last 2 weeks and just halls *** and runs great as far as a/f's go all over the map, part throttle, idle, boost etc
But this week i hooked the wideband back up in my car and noticed that when I downshift/ compression brake, the car runs VERY lean, like off my sensors limits lean 19.4+
You can downshift at any point in any gear, I usually do it in 4th to third to slow down and roll around and the rpms are at about 3K, vacuum is in the -22 region. As soon as you downshift and are off both clutch and throttle itll start out @ 14:1 and the numbers just start going leaner and leaner until it pegs out the gauge and I pull it out of gear. Ive tried dumping fuel (15% so far) int the -22 area and its surrounding cells but it just wont richen up
The car is running ng55 turboedit on a gm 3 bar and dsm 450's, first time tuning a car so I may be missing something.
Heres my map if it makes a difference
CLICK!
But this week i hooked the wideband back up in my car and noticed that when I downshift/ compression brake, the car runs VERY lean, like off my sensors limits lean 19.4+
You can downshift at any point in any gear, I usually do it in 4th to third to slow down and roll around and the rpms are at about 3K, vacuum is in the -22 region. As soon as you downshift and are off both clutch and throttle itll start out @ 14:1 and the numbers just start going leaner and leaner until it pegs out the gauge and I pull it out of gear. Ive tried dumping fuel (15% so far) int the -22 area and its surrounding cells but it just wont richen up
The car is running ng55 turboedit on a gm 3 bar and dsm 450's, first time tuning a car so I may be missing something.
Heres my map if it makes a difference
CLICK!
Honda-Tech Member
Joined: Aug 2003
Posts: 2,462
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From: 310, Ca
Re: (igo4bmx)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by igo4bmx »</TD></TR><TR><TD CLASS="quote">umm fuel injectors shut off when you engine brake.
</TD></TR></TABLE>
like he said..
</TD></TR></TABLE>
like he said..
Re: (HamiltonRex)
Same as mine when u are in the upper RPMS and the TPS is at 0 the ecu basicly does not send fuel nor spark to the engine untell its at a certin rpm then it will restart. Take you car and down shift and watch the wide band the A/F will start moving at around 1,000 rpm or so the motor will try to idle.
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Joined: Oct 2005
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From: Los Angeles
Re: (Dr Pooface)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dr Pooface »</TD></TR><TR><TD CLASS="quote">No fuel+no load= OK.
No fuel+load= BOOM</TD></TR></TABLE>
Bang !!!
No fuel+load= BOOM</TD></TR></TABLE>
Bang !!!
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Joined: Oct 2003
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From: Catching Rivers on Fire TWICE
Re: (W O T)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by W O T »</TD></TR><TR><TD CLASS="quote">But the car is still running at 5k rpms though
****, theres ssomething I never knew</TD></TR></TABLE>
doesnt matter what rpm it is, as stated before the injectors shut off to save fuel
****, theres ssomething I never knew</TD></TR></TABLE>
doesnt matter what rpm it is, as stated before the injectors shut off to save fuel
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