Alright, maybe some of you have a suggestion why my motor quits out under boost
07-07-2004, 02:51 PM
#21
0.5 BAR
Thread Starter
Join Date: Feb 2003
Posts: 111
Re:Alright, maybe some of you have a suggestion why my motor quits out under boo
Narrow and wide throttle settings are the same since my crossover is 98%lo/99%hi.
1000rpm -41%
1500rpm -40%
2000rpm -40%
2500rpm -40%
3000rpm -40%
3500rpm -38%
4000rpm -37%
Vtec@ 4500rpm
4500rpm -36%
5000rpm -35%
6000rpm -34%
7000rpm -34%
1000rpm -41%
1500rpm -40%
2000rpm -40%
2500rpm -40%
3000rpm -40%
3500rpm -38%
4000rpm -37%
Vtec@ 4500rpm
4500rpm -36%
5000rpm -35%
6000rpm -34%
7000rpm -34%
07-07-2004, 05:30 PM
#22
1.5 BAR
Join Date: Feb 2004
Posts: 1,039
Re:Alright, maybe some of you have a suggestion why my motor quits out under boo
Originally Posted by BLACKSI
Originally Posted by ComputerJLT
what fuel pump are u using with those 450s?
the stock fuel pump WILL crap out.
also do you have a wideband and what fuel management are you using? maybe your timing falls off way too much; that will kill power.
and i dont think your motor will outbreath a t3 turbo.
dodge put .42/.48 t3's on their 2.2/2.5l engines that can make over 300hp with the stock turbo. it moves a lot more aire than even a b-series.
the stock fuel pump WILL crap out.
also do you have a wideband and what fuel management are you using? maybe your timing falls off way too much; that will kill power.
and i dont think your motor will outbreath a t3 turbo.
dodge put .42/.48 t3's on their 2.2/2.5l engines that can make over 300hp with the stock turbo. it moves a lot more aire than even a b-series.
Beau
but im sure with a puny d16 and a t25 the stock pump should be fine for a while
07-07-2004, 07:32 PM
#23
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Join Date: Feb 2003
Posts: 111
Re:Alright, maybe some of you have a suggestion why my motor quits out under boo
Im getting a dump tube for the wg welded up tomorrow, in the meantime how do my fuel correction values look to you guys? Anyone using a vafc and 450's run anything different?
07-08-2004, 02:15 PM
#24
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Join Date: Feb 2003
Posts: 111
Re:Alright, maybe some of you have a suggestion why my motor quits out under boo
HERES THE UPDATE:
Went and got a short dump tube welded on that goes past the filter and vents to atmosphere under the crank pully. Drove the car out of the shop warmed it up, got on it for a freeway onramp and I got full boost and acceleration to go with it! I still need to get a hold of a wideband though and tune the fuel values because I run so rich that I stink of gas at idle and cruise, and also I can feel the motor run rough at points where I think too much fuel is being added. Can any of you with a vafc and 450's please post your settings that are working for you.
So in conclusion, it was the fact I was sucking back up my exhaust gasses when the wg opened because I didn't have a dump tube that was preventing me from going past 6k.
Went and got a short dump tube welded on that goes past the filter and vents to atmosphere under the crank pully. Drove the car out of the shop warmed it up, got on it for a freeway onramp and I got full boost and acceleration to go with it! I still need to get a hold of a wideband though and tune the fuel values because I run so rich that I stink of gas at idle and cruise, and also I can feel the motor run rough at points where I think too much fuel is being added. Can any of you with a vafc and 450's please post your settings that are working for you.
So in conclusion, it was the fact I was sucking back up my exhaust gasses when the wg opened because I didn't have a dump tube that was preventing me from going past 6k.
07-09-2004, 12:11 AM
#26
0.5 BAR
Thread Starter
Join Date: Feb 2003
Posts: 111
Re:Alright, maybe some of you have a suggestion why my motor quits out under boo
Here are my new fuel settings that are working better for me:
Narrow/Wide and Hi/Lo are all the same.
1000 -42%
1500 -42%
2000 -41%
2500 -41%
3000 -40%
3500 -40%
4000 -39%
4500 -38%
5000 -37%
5500 -36%
6000 -36%
7000 -36%
8300 -34%
Tell me how they compare to some of yours.
Narrow/Wide and Hi/Lo are all the same.
1000 -42%
1500 -42%
2000 -41%
2500 -41%
3000 -40%
3500 -40%
4000 -39%
4500 -38%
5000 -37%
5500 -36%
6000 -36%
7000 -36%
8300 -34%
Tell me how they compare to some of yours.
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