Does this Crome map look right?
10-29-2007, 08:04 PM
#1
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Does this Crome map look right?
Im just a little curious cause i thought 1000cc injectors were good for more boost than this.
My setup is 94 teg with a b16 motor and tranny.
PTE 1000cc injectors
motorola 2.5bar map
Holset HX35 16cm housing
full throttle FPR and walbro 255
Anyways, i just thought that 1000 would support closer to 30lbs. This is set up for the B16. Im only revving it to 8400. BUt im building a motor this winter that should take 25lbs, so am i gonna need something more injector wise or do i just go up in fuel pressure?
My setup is 94 teg with a b16 motor and tranny.
PTE 1000cc injectors
motorola 2.5bar map
Holset HX35 16cm housing
full throttle FPR and walbro 255
Anyways, i just thought that 1000 would support closer to 30lbs. This is set up for the B16. Im only revving it to 8400. BUt im building a motor this winter that should take 25lbs, so am i gonna need something more injector wise or do i just go up in fuel pressure?
10-29-2007, 08:15 PM
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Re: Does this Crome map look right? (a1320honda)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by a1320honda »</TD></TR><TR><TD CLASS="quote">So on a 1.8 what can i expect to get out of the 1000's boost wise?</TD></TR></TABLE>
Boost isn't how you figure out your injector needs.
Tq/Hp is.
Boost isn't how you figure out your injector needs.
Tq/Hp is.
10-29-2007, 08:17 PM
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Re: Does this Crome map look right? (SOHC_MShue)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SOHC_MShue »</TD></TR><TR><TD CLASS="quote">dont rely on crome duty cycles. They are wrong. </TD></TR></TABLE>
Took the words out of my mouth.
CROME's duty cycle numbers are just not worth looking at really. Keep adding fuel in the maps and just rely on what the wideband tells you.
Took the words out of my mouth.
CROME's duty cycle numbers are just not worth looking at really. Keep adding fuel in the maps and just rely on what the wideband tells you.
10-29-2007, 08:24 PM
#6
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Re: Does this Crome map look right? (RC000E)
I was using this calculator (http://www.rceng.com/technical...EgO3t) to figure out what i needed. Im hoping to make 550ish on my setup, and according to that, at 45psi fuel pressure not exceeding 80% idc that 1000's will only get me to 515. So would i need to go up in pressure or get more injector? I thought 1000's would support 600+
10-29-2007, 08:44 PM
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Re: Does this Crome map look right? (a1320honda)
Well, your fuel pressure is gonna rise in boost if you have a vacuum line reference on the regulator. With the rise in pressure on the regulator your going to get increased injector output.
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10-29-2007, 09:16 PM
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Steve I can possibly run the math for you and get your projected duty cycle if we can establish projected peak torque and realistic HP numbers. Also with Chrome if their comp tables are off the duty cycle will be skewed anyway
10-29-2007, 09:40 PM
#11
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Re: (JDMisGOOD)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDMisGOOD »</TD></TR><TR><TD CLASS="quote">Crome's duty cycles are goofy as hell! 
</TD></TR></TABLE>
Ya that seems to be the general consensus.
But PTE 1000's are good to 600+, right? Id like to come out of the gate next year tuned with 500hp, but over the year be able to get to as close to 600hp as possible if not more. And ive heard you can push PTE's pretty hard.
</TD></TR></TABLE>Ya that seems to be the general consensus.
But PTE 1000's are good to 600+, right? Id like to come out of the gate next year tuned with 500hp, but over the year be able to get to as close to 600hp as possible if not more. And ive heard you can push PTE's pretty hard.
10-29-2007, 10:13 PM
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Re: Does this Crome map look right? (RC000E)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RC000E »</TD></TR><TR><TD CLASS="quote">Well, your fuel pressure is gonna rise in boost if you have a vacuum line reference on the regulator. With the rise in pressure on the regulator your going to get increased injector output.</TD></TR></TABLE>
No, that is not correct with a regular 1:1 regulator like an AEM or Aeromotive.
Example. The fuel pressure is 40psi at 0psi of boost and 60psi at 20psi of boost because the regulator is 1:1, then the fuel pressure across the injectors is still 40 psi. 60 psi rail pressure minus the 20psi of intake manifold pressure equals 40psi that the injectors see.
No, that is not correct with a regular 1:1 regulator like an AEM or Aeromotive.
Example. The fuel pressure is 40psi at 0psi of boost and 60psi at 20psi of boost because the regulator is 1:1, then the fuel pressure across the injectors is still 40 psi. 60 psi rail pressure minus the 20psi of intake manifold pressure equals 40psi that the injectors see.
10-30-2007, 06:57 AM
#14
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Re: Does this Crome map look right? (MADMAX_zero)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MADMAX_zero »</TD></TR><TR><TD CLASS="quote">
No, that is not correct with a regular 1:1 regulator like an AEM or Aeromotive.
Example. The fuel pressure is 40psi at 0psi of boost and 60psi at 20psi of boost because the regulator is 1:1, then the fuel pressure across the injectors is still 40 psi. 60 psi rail pressure minus the 20psi of intake manifold pressure equals 40psi that the injectors see.
</TD></TR></TABLE>
exactly its all about the pressure differential across the injector
No, that is not correct with a regular 1:1 regulator like an AEM or Aeromotive.
Example. The fuel pressure is 40psi at 0psi of boost and 60psi at 20psi of boost because the regulator is 1:1, then the fuel pressure across the injectors is still 40 psi. 60 psi rail pressure minus the 20psi of intake manifold pressure equals 40psi that the injectors see.
</TD></TR></TABLE>
exactly its all about the pressure differential across the injector
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