Sr20det Tuned Ecu w/ generic board, need help with kinks

[mr.nismo.]

Ok so details:
Generic Ecu tune
http://uploads.tapatalk-cdn.com/20160224/37897a66ba8d61cce7ed3e41db432f19.jpg
http://uploads.tapatalk-cdn.com/20160224/9ab2597a32594ced0f35ea39108c219b.jpg

Calls for 550cc and z32 maf

I have all of it in my car and my wideband is telling me it's pretty lean.

Idle : 16.5-18.5
Cruise light: 15.5-16.5
Mid throttle: 12.5-13
WOT: 11.8-13

Injectors are 550 from P2M
OEM z32 maf
Stock timing and fuel press.
Stock t25 w/ boost controller at 14 psi

PO said he never had a wideband on it and said that he ran his Sr hard all the time and it was perfect. It idles and drives perfect but wtf with these afr readings? Only thing I can think is DP (highly double bit ill confirm tonight), the injectors are too small, or this tune was made at a higher fuel pressure. There should be no reason for how lean this is reading with 550cc on the oem shitter turbo

Anyone else's input? Thanks in advance!


Sent from my iPhone using Tapatalk

[derass]

How were the AFR's with stock ECU, injectors etc? In other words, was the SR running well before all these new parts?

Are you 100% about the size of your injectors? Stock KA are also red. edit: I can see from the pic that they're new in the bag

Increasing the fuel pressure seems like a good thing to try.

[KAT-PWR]

Anything under 13 in boost is generally acceptable <12.5 for safety as long as the timing isn't stupid. Being lean at idle is not a concern and mid throttle again looks like it is probably fine.

Boost leak test the car just to double check and check for exhaust leaks

Try emailing worksevo.com says they were founded and did tuning in 2003. The ecu is dated 2006, maybe they tuned it?
They're in Cali too....

[mr.nismo.]

How were the AFR's with stock ECU, injectors etc? In other words, was the SR running well before all these new parts?

Are you 100% about the size of your injectors? Stock KA are also red. edit: I can see from the pic that they're new in the bag

Increasing the fuel pressure seems like a good thing to try.
That's what I was wondering and afrs for wot was the same but that was with stock Sr injectors and maf not 550 and z32 and it was perfect with stock stuff.





Anything under 13 in boost is generally acceptable <12.5 for safety as long as the timing isn't stupid. Being lean at idle is not a concern and mid throttle again looks like it is probably fine.

Boost leak test the car just to double check and check for exhaust leaks

Try emailing worksevo.com says they were founded and did tuning in 2003. The ecu is dated 2006, maybe they tuned it?
They're in Cali too....


And what the hell? Where did you find this info? I've been looking them up but apparently I'm not looking hard enough. And I know they're oaky reading but that isn't correct for the t25 turbo to have those readings it should be way lower at WOT


Sent from my iPhone using Tapatalk

[mr.nismo.]

Anything under 13 in boost is generally acceptable <12.5 for safety as long as the timing isn't stupid. Being lean at idle is not a concern and mid throttle again looks like it is probably fine.

Boost leak test the car just to double check and check for exhaust leaks

Try emailing worksevo.com says they were founded and did tuning in 2003. The ecu is dated 2006, maybe they tuned it?
They're in Cali too....


Just emailed them hopefully it is them so I can get the for sure info on it


Sent from my iPhone using Tapatalk

[KAT-PWR]

That's what I was wondering and afrs for wot was the same but that was with stock Sr injectors and maf not 550 and z32 and it was perfect with stock stuff.
nd what the hell? Where did you find this info? I've been looking them up but apparently I'm not looking hard enough. And I know they're oaky reading but that isn't correct for the t25 turbo to have those readings it should be way lower at WOT


Sent from my iPhone using Tapatalk

Your tune cares about air flow not the turbo you are running; (x)CFM requires (x)Fuel. The ecu tables don't have a "This is (X) turbo" so here's what we'll do tab.
That info is I believe tuning rule of thumb and I know very little about tuning. Look at dyno graphs that chart AFR, most have a solid line drawn at 13:1 and the line for AFR is below that line.
You tuned ecu is more aggressive with the air fuel ratio than the stock ecu, why is that surprising?

I searched "work tuning Nissan" and it was the 3rd link...
http://i166.photobucket.com/albums/u116/waxball88/177DC30C-F48C-4CC1-B649-B7D4C8E99C92_zpsonrmhqfk.png

[derass]

After taking a closer look at the AFRs in your first post, they're actually not too bad. KAT-PWR is correct in saying under 13:1 is fine at WOT. Mid-throttle looks good too. It's just idle and cruise that are a bit high. They should be right around stoich (14.7:1)

[mr.nismo.]

Your tune cares about air flow not the turbo you are running; (x)CFM requires (x)Fuel. The ecu tables don't have a "This is (X) turbo" so here's what we'll do tab.
That info is I believe tuning rule of thumb and I know very little about tuning. Look at dyno graphs that chart AFR, most have a solid line drawn at 13:1 and the line for AFR is below that line.
You tuned ecu is more aggressive with the air fuel ratio than the stock ecu, why is that surprising?

I searched "work tuning Nissan" and it was the 3rd link...



After taking a closer look at the AFRs in your first post, they're actually not too bad. KAT-PWR is correct in saying under 13:1 is fine at WOT. Mid-throttle looks good too. It's just idle and cruise that are a bit high. They should be right around stoich (14.7:1)


Turn up the boost and see what happens? Lol



Sent from my iPhone using Tapatalk

[Mile High Silvia]

Blink....blink.blink..blink...blink.

Too many blinks for me...

[mr.nismo.]

Well there's no leak in exhaust. this thing is so lean somethings wrong. I hit 14.5 psi with a 13.4 afr at WOT. That's not okay. I upped my fuel pressure to 45 with vac at idle and there was no change. I'm gonna plug in my laptop and hopefully consult can get into it


Sent from my iPhone using Tapatalk

[derass]

Here's another thought: perhaps the ECU was tuned with quality injectors (Tomei / HKS / Nismo).

Your P2M injectors are likely re-drills which typically have poor atomization. The unatomized fuel does not burn and you end up with a slightly leans AFRs across the board.