2000 crv automatic awd. Lifted on 225/75s. Tuning will be done via a cartech 2025/bell engendering fmu. Crude up yes, but I can't "chip" my ecu due to being auto and the tcu being integrated. And for how basic my build is, it will suffice.
So 6-8psi. 1 step colder plugs, pull a few degrees timing if needed. Plm toda rep (dc carb number tacked on), 2.5" exhaust, cam gears adjusted to maximize power 3k-5k rpm. And that's it. Stock gutted air box, green filter & 3" intake elbow. No power goal, whatever it makes it makes. Just want more daily driver power & torque & this is the best CARB legal was to go.


Fuel wise, obviously I can't go to big of an injector or the ecu might not be able to control it. I wanted to run 410cc RDX injectors at 50-55psi. But may run 290cc at the same psi, if that will cover my needs. The stock pump is 80LPH and should be ok if not what's a good budget minded upgrade, I do not need or want a walbro 255. I know its more than enough but hoping for a oem option to keep reliability.

 

Years ago when bigger injectors and an adjustable rise-rate regulator (FMU) were the only choice, Corky Bell and I did a LOT of experimenting with the 2025 FMU. I found that using a Walbro high pressure 255 lph pump (I would use a DW200 now), a set of RC 440's and the 2025 rising at between 3 and 3.5 psi per pound of boost worked extremely well... as long as you set the static fuel pressure at idle (no vacuum, no boost) at the rail around 28 psi (+/- 2 psi) and the base pressure on the FMU about 6 psi higher. This will give you about the same fuel delivery at idle and part throttle and still be able to add the fuel that you need under boost. Stock injectors will REQUIRE a high pressure fuel pump because you will be starting your rise at 55-60 psi and increasing at the FMU at about 4.5 psi per pound of boost... thus getting you up around 85-90 psi of fuel pressure under stock boost levels. The stock fuel pump cannot deliver the fuel volume necessary to keep up with demand at those pressures... nor can a standard pressure Walbro 255.

 

Ok so my stock crv has 240cc injectors. 80lph fuel pump and 40-46psi fuel pressure stock.

Ur recommending 28psi, and a 255HP pump? And whatever will be needed for fuel pressure, which you gave me a base line on.

Now will i need an actually adjustable regulator on the rail or will the stock one and the Cartech 2025 suffice? I ordered a 190lph walbro prior to seeing your review. Double the amount of a stock pump could provide.
I can still order RDX injectors which are 410cc at 55psi as well.


Fwiw this 2000 crv is auto so chipping the ecu isnt an option. And i prefer to keep it basic anyway. Im not looking for max gains or anything just a basic setup for more daily driving power.

 

^^
How do you plan on tuning this since your sticking with stock ECU and bigger injectors and adding more air?

I think you need to step back, see everything involved to make your SC work correctly without blowing up the engine.

 

I ran a set of Scion tC injectors (rdx but 310cc and fit oem rail) with a 255 at 42 psi and idle was fine. Ecru was able to pull enough fuel. Very rich at full throttle though. I did end up getting tuned, this was just to get the car moving before I tuned it. I'm actually pulling them out though as I need bigger now.

 

If you want to get tuned, s300 works on autos.

 

^^^
You went to STP in Davie? Was it Kenny?

 

Pm me a price on the injectors to 92395?

 

Yeah we have the aem fic as well. I plan to run something eventually if this initial process doesnt work. But realisticly, a stock *** b20 auto crv will never be a power house...and at 6psi im just over thinking things. People do very little with these jrsc lots at 6-8 psi and they work wonderfully. Pass ca emissions and thats my goal.

Supercharger will give it gobs of low end and thats what im after. Cruising daily driver power. Not to make ot faster but make it better than what ot was and for 1400 i aint argueing

 

Lmao, you do realize the are carb'd legal kits.. that alone is a lot of work. Now do you think JR would go through all that and release an unsafe "motor blowing kit"....you realize JR sold these kits with a 5:1 FMU ONLY. Amd reccomended 1 step colder plugs. And thats it right. No blown engines, nothing.


Now im adding extras at 6psi, using a more advance fmu thats tuneable, hence adding fuel, a larger pump and 1 step colder plygs and larger injectors....but mot too large the ecu has trouble pulling fuel in closed loop,



So what do i need to step back and learn? Either you understand and didnt rear or you dont understand and read...either way. Useless commeng honestly. Sorry to be harsh. I was more worroed the ecu wouldnt pull enough fuel with 410s in closed loop and id run rich. But the tc injectors, being 310cc look to be my answer for injectors, not too big. Just enough to cover the extra fuel without over running stock 240ccs like JR did when they released these.

 

Hey, did this ever get finished?