proTge

well it was going to be a surprise but i need help.
i am almost done with my sohc turbo project everything was
going fine unti i installed the ecu out of dohc now the car is running like crap can some one tell me why?
my check engine light is now on and the car have poor acceleration.any help will be appriciated.

proTge

by the way the car is and will stay automatic

Protoss

because thge DOHC and SOHC are two completely different ECU's. The DOHC ECU is built to read another signal from the Disty and the car is searching for VICS, which you dont have, and VICS is not a good idea for I/F purposes.

the car thinks it has 2 cams, higer compression, VICS, a differtent, Disty, and unless you pulled your ECU from a BPT, your car has the improper fuel map for boost.

BTW if you pull an ECU out of a car make sure the donor car had a similiar tranny. MXT ECU's and ATX ECU's are also diferent.

mazdprotege94

what ecu number did you install?

If you have the BPO9 you should not have any problem thats the one that I have in my car but my car is manual tranny.

Ck if the automatic tranny needs an automatic ecu just for curiousity.

Protoss

it's a turbo your BP09 ecu is now worthless. he swapped out the SOHC ECU. read the ******* thread. he has a turbo. the fmu is now incorrect.

if you are doing an sohc turbo, you will have to go haltech universal, and custom program, or piggyback on the SOHC ECU (tricky and pricy)

mazdprotege94

The BP09 is not the SOHC ecu is the DOHC.Looks like you dont know noting of turbo because I use to run my SOHC with the stock ecu up to 15psi of boost without any problems, There no need to use haltech or any other piggyback in mazda protege or 323 because you have the flow meater to play with. we have some proteges and 323 here in the Island running 12 sec 1/4 milles whith BP09 ecu, Sorry but if you dont know dont talk.

Protoss

Well i pulled a BP10 ECU out of a CDM protege GT. and that has a bP engine. hmmmm I know someone who has pulled a Bp09 out of an EGT and i pull a BP09 out of my CDM LX (sohc)

so i guess it is anyones guess.

and there is no way you can run 15psi of boost on just a stock ECU.

fst323

somehow...those PR guys ARE doing it.

BoostedPro

How is it that a stock SOHC ecu can run 15psi of boost, but the GTX ecu cuts out at 14.7psi and the GTX is made to recognize boost? I know the PR guys are tuning nuts, but I smell some

Btw, 12's are possible.....with a DOHC turbo motor. If somehow they hit 12's on a SOHC motor, I doubt the cost of it was anywhere near reasonable. Also, lets see how long that motor will last. A stock DOHC motor will pull a low 16/ high 15. A stock GTX pulls a 14 sec 1/4 and a stock GTR is capable of 12's. So, unless it's a straight race motor, there;s no way a SOHC Protege is gonna cut 4 or more seconds off it's 1/4 mile time.

midnightblue97

Maybge you ran a stock sohc ecu with a turbo, but he was using a dohc ecu with the sohc/turbo.

proTge

may be you think is bs but i saw the car that i got my sohc turbo manifold from run a 12.9 0n the quarter with only head work
and other bolt ons

fst323

now, that...i have a hard time believing

atila

me also i've had a hard time getting in the mid 13 with my gtx engine, so with a sohc maybe but with major work done to it.

Protoss

Ok this is Bullshit!! STFU. n00b. god people like you make me sick. you are not only ill-informed, but stupid.

there are no bolt-on's for an sohc for starters!! a GT-R running 15 psi and headwork will run a 12.8. that is with a Vj-23. and the flow efficieny of the SOHC head sucks! it peaks long before 200hp and you need ~300 to get into the low-low 13's

fucktard! omg quit beign ******* retarded. this is crap!

They are using piggyback systems.

proTge

hey protoss,next time im in Ottawa with my turbo sohc i will be looking for you and your vj-20 with haltech. so you can really see what a sohc can do.