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7M-GTE Engine Technical Discussion Have a problem with your 7M-GTE? Technical tip or trick? Post here.

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Old 05-05-2005, 04:55 PM   #1
kulangflow
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Default Lex AFM + 440s??

Howdy All,

Long time reader, first time thread starter-upper.

Background:

I recently purchased a Lex AFM + 550s from someone on another forum. It turns out the 550s are bad.

Questions:

Can I get away with using the Lex AFM w/ my stock 440s to yield increased power so long as it's tuned correctly with my SAFCII?

or

Should I stay with stock AFM and stock 440s until I can get the 550s rebuilt by RCEng?

Thanks in advance for your help.

(PS. I searched to no avail on the subject.)
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Old 05-05-2005, 05:06 PM   #2
aye mate
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Default Re: Lex AFM + 440s??

http://www.7mpower.com/john_lunsford.shtml

I would get them cleaned and flow tested before going too crazy. But I think there are lots of people that have done it.
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Old 05-05-2005, 05:16 PM   #3
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Default Re: Lex AFM + 440s??

Right on. John's a really cool guy. I bought my K&N kit from him.

So, now I'm wondering if I'd need to upgrade my fuel pump like he did to get enough fuel out of the 440s?

I should let it be known that my goal is a reliable/modest 300 rwhp. I'm not trying to break records or anything.

Mod list so far:

SAFCII
Profec B
K&N FIPK
2.5" to 3" Megan Racing dp
3" HK$ catback w/ gutted cat
HK$ MHG tq'd to 80 ft-lbs
A342 (1JZ) a/t tranny

Thanks again for your help!
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Old 05-05-2005, 07:21 PM   #4
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Default Re: Lex AFM + 440s??

Yes, get a larger fuel pump, an AFPR and get rid of the "J-tube".
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Old 05-05-2005, 07:32 PM   #5
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Default Re: Lex AFM + 440s??

i dun wanna sound like a complete newbie here, but...wtf is a "jtube"
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Old 05-05-2005, 08:12 PM   #6
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Default Re: Lex AFM + 440s??

"Fuel Return Pipe Support" 2nd Pic

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