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750's or 850's?

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1FAST2G

20+ Year Contributor
138
0
Sep 19, 2002
La Puente, California
I know I need 750's. But www.fuelinjectorclinic.com his have a sale on 850's. 750's are $459 and 850's are $400. I have a TD06 20G with all the supporting mods except fuel injectors. I have a Ramchargers MAFT to control fuel. After my 20G I might upgrade to a 60trim or a 60-1 so the 850's would work good. But also in a couple of months I plan on upgrading my whole fuel line to -6an with a fuel injector clinic fuel rail, so this would make my 750 flow alittle more, and my the 850's flow alot. So which should I get? I can't decide.
 

1badgsx

20+ Year Contributor
34
1
Feb 13, 2003
Two_Harbors_MN
get the 850's
 

nowayout

20+ Year Contributor
680
1
Jul 17, 2002
green bay, Wisconsin
660 too small for 60-1 I have it in my car right now and running 90 duty cycle and 13.75 psi of boost. Which is a 60-1S trim.

Just ordered 780 today from Extreme PSi for $340 for the set.
I'm hoping this will get me in the 16 PSI of boost and under 85% duty cycle.

850cc would be great but I'm worried about idleing issue is a concern without a standalone. I don't know if the MAFT can handle 850cc. I've never tried it so can't tell you?


I know the DSM link guys run 850 fine.
 

rdrkt

20+ Year Contributor
1,544
2
Apr 20, 2002
Baltimore, Maryland
Originally posted by nowayout
850cc would be great but I'm worried about idleing issue is a concern without a standalone. I don't know if the MAFT can handle 850cc. I've never tried it so can't tell you?
I ran 850s on a hacked to hell 1g MAS and SAFC with 272 cams idle was pretty decent. I did have a little electronic black box that I was testing out for hesspower and that is what allowed me to raise my hz count to a reasonable level. Without that I don’t know if I could have dealt with that type of idle on a daily driver.
 

swordfish

20+ Year Contributor
608
2
Mar 8, 2002
Ft. Smith, Arkansas
You might want to check out dejontool. Dave is selling the PTE 780's (same style as FIC) for $349

jeff
 

alltrac

Probationary Member
8
0
May 23, 2003
CaliforniaUS
Umm... 660's should be good untill your running about 25-30 psi... go with the 750s if you must... by the time you will need 850's you will have ur engine built from the bottom up and be running low 11s high 10s
 

Amar1995

15+ Year Contributor
369
3
Sep 6, 2003
Moscow, Idaho
I've got a brand new set of FIC 660's I'll sell ya for $275.00 shipped. Let me know
 

desolateboosted

15+ Year Contributor
192
5
Jan 20, 2005
Twin City, Minnesota
My idle is fine and I have 880s, but If you get the 850s you will have to get a chipped ecu to compensate for the airflow changes. If you don't you will have sky high timing advance which will lead to massive knock. If you don't get a chipped ecu another option would be an afpr. imo to run big injectors comfortably you should get both.
 
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