Ek4Daphatch

Wats up h-t I recently put a b20 in my ek and I'm running with a p75 n it's not getting enough gas to the motor some had told me because the ecu is ls (1.8) it's not sending enough fuel to feed the b20 (2.0) is this true? And is there any other ecu I can get that will let me run fine ?

mouab18c1

iTrader: (5)

How do you even know you're not getting enough fuel? How are you monitoring this?

Dc4LsTeG

iTrader: (7)

X2..and no I don't believe that would cause that on my old b20b I had a p75 running it the whole time without problems

Ek4Daphatch

The car is boggy n idles low even with messing with the idle control valve or maybe the ******* that sold me the p75 sold it cuz it was messed up ?

mouab18c1

iTrader: (5)

An ecu is only bad if it is throwing a solid CEL. If your car is still starting with no issues then the ecu is fine. I have seen this before on a customers car. Had a stock b20 running a stock obd2 ls ecu. Burned him an ls map on Crome and the stupid thing ran like a champ.

Ek4Daphatch

So howshould I go about fixing my problem?

mouab18c1

iTrader: (5)

Get a tune

Ek4Daphatch

thats like 400-600 depends where i go n dont wanna waste money tuning a stock b20 -_-

uvamosk

I have a B20b high comp in a EK with a P28 and running crome with a ostrich and data log with wideband.

The LS ecu is running the engine lean for sure I have saw it in person with my wideband. What you can do to fix this issue on the cheap is buy a Adjustable fuel pressure regulator and fuel pressure gauge and bump up the fuel pressure and test drive the car. Use the "feel" of the car to get feedback on how much to increase the pressure.

This is by no means the best way to fix the problem, because now you will run rich in some parts of the map and lean in others but it will "band Aid" the problem though and make the car run "better".

The LS ecu will run the car though, and your idle issue could be caused by a different problem since i'm not able to see the car in person I wouldn't be able to tell you for sure.

uvamosk

Did you adjust the scalar's and up the offset on the maps?
I can't remember becuase it was a long time ago but We had to add alot of fuel to the map to get the LS maps to feed the engine on P72 code.

uvamosk

Also,
Is it a P75 OBD1 ecu?
How does it drive on throttle?
Did you check your TPS voltage and set it correctly?
Is the car in correct timing?

Ek4Daphatch

i bought a fuel pressure regulator but i need a guage wat pressure should i put it too?

Ek4Daphatch

its a obd2 P75....it drives fine on throttle just feels like something is holding it back from full potential ... i have no idea on how to check tps voltage or how to set it ... timing should be fine

Ek4Daphatch

i ran a single vtec computer when i first put the motor in but it wasnt my ecu so i only used it till i found the p75 n it felt great on the single v ecu just threw the check engine light for not having vtec n my idle was high at 1500 rpm n idled like it does when ur iac is messed up

Ek4Daphatch

i think i might just try to look for a b20 ecu but its hard to find a manual b20 ecu n idk the code gotta look it up

Ek4Daphatch

p7j i believe the ecu code is

mouab18c1

iTrader: (5)

Who gave you that quote? Stock motor is easy and simple to tune. All you need is a wideband and someone with some knowledge that will tune for you. Most guys on the street charge less than $200 for a street tune. But what do I know. Goodluck

Ek4Daphatch

i would rather go a diffrent route then a tune but if i cant find any other way then i guess ill have no choice

uvamosk

Well, it probably was "feeling" like it pulled hard because you are running lean/advanced timing.

If I lean mine out to 14+ I can feel a major difference in power but running at 14:1 at high rpms isn't the best of ideas.

uvamosk

Do you have the Fuel Pressure regulator hooked up?
IF so then that might be your issue, if no then get a gauge and hook it and the FPR up.

Once you do that set it to stock fuel pressure, then bump it up 2 psi at a time and drive it. I would remind you that when my b20 feels like its pulling super hard it was running really lean.

I'm going to get my P72 ecu chipped so I can run the knock sensor because I'm having a feeling that the B20 likes to be lean.

Ek4Daphatch

i have the fpr hooked up i just need to hook up the gauge to the fuel filter but i cant find any adapters for it if anyone has any please lmk or where i can get it and also wat is the stock fuel pressure so i kno when i mess with it

uvamosk

If you have a Adjustable FPR hooked up with no gauge, im pretty sure its not set right at all. It could be running way to rich, or lean or inbetween.
Get the gauge hooked up and let me know, I would take off the Vac line going to the fpr and set it at 48psi and test drive it.

Ek4Daphatch

Yeh it probably is running a little to lean or rich I think I have it set too open cuz I'm going threw gas like nothing... The reason why I don't have the gauge on is because I can't find the fitting that goes on the fuel filter to hook up the gauge

uvamosk

Do you also have large amount of carbon on your bumper and in exhaust?
Also, I would get a new gauage or find the fitting asap.
If you are dumping a large amount of fuel, you could wash the cyilinder walls, which could lead to premature engine ware and damage.

If you have a factory FPR laying around I would recommend using it till you get a gauge hooked up.

Ek4Daphatch

Ok but like I asked before where can I get that fitting?