Thread: SR16ve ECU with SR20ve motor

Heres the set up (ran like this before)
Sr20ve motor
Sr16ve ECU
sr20ve injectors with stock fpr
sr20ve MAF
NO Oxygen sensor from the looks of it/ he wasn't sure (thats how i bought it)
SAFC unprogramed thats what i was told ( don't have anymore)
VE Dizzy

Let me start by saying that I ve been searching this allot so please don't tell me to do more research in the forum. I ve pm people on all sites and talk to a few and no one's really help that much so thats reason for the post. I here read people saying it works fine and others that sr16 ecu cause the motor to runs lean. Is that because you using the oxygen sensor? I noticed that the dizzy was fully advanced on my motor. I look at the plugs when i reinstalled the motor and they were that perfect cream color.. By advancing the timing all the way and not running a o2 sensor to fix timing and fuel adjustments?


I ve read people using Jwt / calumsult reprogramed and de stuff I am not going to spend that kinda money and start over. I got everything for the ve already. I also read that people use 370cc injectors and A.F.P.R. to fix the problem. I am wondering if that really is needed when the oem injectors on both ve motors are 333cc and use the same MAF sensor? I ve seen it argued they are different VQ maps?

You see, the sr16ve and sr20ve both have 333cc injectors but the pulse is different so I am sure that if you use the sr16ve ecu on the sr20ve you will almost certainly run lean. Just do an AFR test and see.

I used that set-up for a while but use the greddy emanage blue to tune. b4 tuning the aafr was like 17:1 at WOT. You can also use 370cc injectors and FPR (very old method) or use the same set up and use SAFC to tune it.

My best advice to you though is to get a chipped ecu for the sr20ve - Calum, JWT, Nistune, etc.

Peace

Here is my set up:

-Stock VE everything other than 370cc injectors
-Chipped VE ECU

Simple stock plug and play with 8.5k rpm, no speed limiter, 5200/5800 switch points, no O2 sensor, A/F flater than my sister. It has ran great for 2years in a 203whp ve.

PS: Im parting out my entire car probably tomorrow, so I'll let the complete harness and burned ve ecu and 370cc injectors go for like $350-400 to who ever wants to be straight plug an play and be on the road in hours.

cant u just use the 333cc injectors and up the fpr with adj. FPR. would that help the leaning?

If possible to use SR16VE ECU with greddy emanage to help the leaning...........?

I hope use on my SR20VE , 333cc inyectors, greddy emanage, adj. FPR, SSAC w/secondaries in 3 inch, Stock VE MAF, SR16VE cams and SR16VE ECU .........? That set up its ok .......?

No, wont be enough. I have used the same setup before but had to go to 370cc injectors to get the fuel ratio right.

I used the SR16VE ecu with 370cc injectors and it was running too rich. so i swapped back to the 330cc. i looked at the O2 sensor readings and saw it fluctuating as normal. but i know that it is not accurate as a wideband reading. My question is how come the O2 sensor cannot correct the AFR mixture?

If you were looking at Consult on the narrow band O2 sensor, which swings wildly between lean and rich, you're not seeing the whole picture.

It's DANGEROUSLY lean, and as Kiwi-japie, and many others have said it's not ideal to run this for an extended time.

The standard ECU's learning (using O2 sensor) in closed loop doesn't have enough 'movement' to correct for it, AND when not in closed loop, runs directly off the maps it has NO chance of correcting for it.