6G Celicas Forums

All right, I am in the progress of piecing a turbo kit together for my ST and need some questions answered and some things confirmed before I buy more stuff. For the turbo I am using a 14b off a 1st gen DSM (it’s a little bigger that a T25), I have an intercooler off a saab 900turbo and 1st gen dsm BOV along with all the pipe I need. I am planning to run 8 psi.

So problem 1 I plan to buy a walbro 255 lph fuel pump but do not know what injectors I should use. I have read that on this site that 1st gen mx6 or probe’s injectors are a good match but can not find any. I have buddy that will give me mk3 supra or 460cc from a rx7 but do not know if I can make them fit or if they are too big. I know that the civic guys often use 450cc off dsm’s.

For fuel management I plan to buy a SAFC and maybe a wide band o2 sensor if I can afford it before I have it dyno tuned.

For a turbo manifold the only one I can find with DSM flange and have welded together easily is on JGS tools. Does any one know of any other sites or shops that can make me a manifold for a good price?

Thanks for any input in advance

Honestly.... Are cars arent like dsms... You cant make them fast on a budget... and like dsm's Theyll break really easily when moding them. 450ccs off of a dsm for a st motor.... What are you planing on tuning it with?

he plans to tune it with the safc.

but the problem with the safc is, your still using the stock ECU to work the injectors. The stock ecu can not handle such a large increase of injector size. Therefore, if you increase injector size too much the ecu can not controll them and the car will run poorly.

if u use e-manage u don't have to use checkvalves or a fmu or buy new injectors or probally not even a walbro pump

cuz emange can bypass the map sensor, increase your injector from (200cc x 150%)= up to 450 cc
(probally need fuel pump then , but not for like only 6-8 psi )

so if u turbo u should use a piggyback or stand alone.

why use safc ???? cuz it cheap ($200) a used emanage cost $200


(just my opnion correct me if i'm wrong ...please)

i agree somewhat with smokeys post.
however, i WOULD get some injectors in the 315-330cc range, you dont wanna be trying to make your stock ~200cc injectors flow enough fuel.
they will be @ 100% duty cycle all the time, right on the edge.
you can use the MKII supra n/a 315cc injectors, IMO they would work well for under 200whp.
and yes, the emanage would be the better choice, but i would still encourage you to get the map sensor, the less fooling you do to the stock ECU, the better.
ohh
and you NEED to do the fuel pump.
even @ low boost, ESPECIALLY if you go the cheaper route with the FMU

so with an emanage i would not have to worry about a new map sensor and just have it dyno tuned

yeah emanage will do it

yeah i guess 200 is at 100%
yeah and the pump to pump it.

ok i was about to get the pump today but what year supra do i get it from, MK3 right.

MK3 pump is a drop-in...I have a MK3 Supra Walbro 255lph on the Celi. I bought it for my MK3 and then sold it before installing it. You need the stock fuel pump panty...the Supra's is too tall and the fuel pump cover and assembly will not seal tightly. You can also use a MK4 Supra pump, too...and it flows more. DSM injectors do not work...they're low impedance. You need Ford Probe Turbo/Mazda MX-6 turbo injectors...they're cheap...and you get them flow tested and cleaned.

thanks for all the help guys. if i am lucky i will have the kit together in about a month or two