i have a 94 ls turbo and i need help how to route the vacuum for the fmu thanks

 

1999 called, they want their FMU back
Why are u running a FMU with all the options available nowadays?

 

im on a budget and it was free

 

I speak from personal experience, in the long run it will not be free. But if you insist on using it t off the vacuum line that runs to the fuel pressure regulator.

 

LOL

Save your money. Get a chipped ecu for sub $100. Use freeware until you can afford a good ems like hondata.

 

ok thanks if i chip the ecu what will i need to tune it

 

Do some searching and get rid of that fmu. I'd would rather use the stock fpr.

 

ok thanks

 

Dude. shhhh. You were eight years old when guys were running 9s with FMUs. yeah, a FMU sucks compared to modern options, but for you to suggest running stock 1:1 regulator over an fmu proves that you're just stringing words together for the fun of it.

 

Eleven years ago I was running a FMU on my D.D sohc turbo. It worked flawlessly with 370 cc injectors and an SX fpr. the car ran 12.0's just pulling a sub box out slapping on slicks and turning the boost up, and 11.30's in a gutted crx after that..This was before we had other options like Hondata, Crome, etc. There are much better methods of management available today, but that doesn't make FMU's junk, just old school technology.

 

Yeah, Im young and I wish I could stay this age. I have used a fmu before, but I just found it easier at the time to use a stock regulator because of the tuning software offered today. He did ask how to install a fmu so im going to post how I did it: First I put a T fitting going to my fpr and ran a line to the vacuum port on the fmu. Next I took the stock return line off the fpr and put it on the outlet of the fmu. Then I ran a hose from the fpr to the inlet of the fmu. It worked for me, but I might be wrong so please correct me if needed.

 

nopethats correct i justinstalledafmu yesterdayon myboosted b18c new technology costwaytomuch hondatais amazing if u can front the cash but from my understanding an fmu is good up to 9psi anythuingafter 9 u need to upgrade

 

Not true, I ran 27 psi on a FMU. 14.5 psi daily driving for over 2 years.

 

really u ran high boost on an fmu and everything was good dam that makes me happy now i wont have to fork out for hondata for a little while yet how did it run on 20psi of boost what was all done to your motor

 

The difference is there were no other options back then. No Hondata, crome, nothing. It was a crude way of adding fuel, but it can be done. Just make sure you have an assortment of diaphragms. The motor was a D16a6 block, LS rods rebushed for sohc wristpins, arp rod bolts, srp pistons, stock D16z6 head. Garrett T3, RC 370's, SX fpr.

 

well im running a stock b18c block with header intake turbo stock injectiors fmu aem fuel rail blox fuel reg and skunk 2 mani what boost do u think i could safely run

 

This is a good thread regarding fmu tuning

https://honda-tech.com/forums/forced-induction-16/old-school-tuning-its-finest-1426775/

search for more threads by him as there is a part2&3 I think.