Hello all,

I got a basemap from my tuner but it seems like it is still running way too rich. I don't want to drive on it being this rich to prevent washing the rings.

Build setup:

P28 - Hondata S300

GSR Block
B16 Head
CP Pistons - 9.0.1
Eagle Rods
ARP Headstuds
ACL Race Bearings
Crower Valvetrain
GSR Cams
FIC 1100cc High-Z injections
Walbro 255 fuel pump
Omni 4 bar map


Turbo setup:
Spooling performance quick 4 manifold
STC Reaper Turbo
50mm Tial BOV
44mm Tial Wastegate
GrimmSpeed Manual Boost controller


I have attempted to play around with some of the settings all of which have had no luck in getting me to lean up the tune. Maybe possibly the dead times are incorrect? I just switched from Precision 1200cc low impedance to the FIC 1100cc high impedance and the tuner said it won't require any changes.

Here are some screenshots of my configurations:

I have also uploaded my Hondata "ski" file - If there is anyone that could point me in the right direction that would be great!
Thanks!

 

Do you have a wideband connected? Take a drive and datalog then post it

 

If you have a wideband, adjusting only the overall fuel multiplier would be the way to go

 

I have a PLX wideband installed - It is not hooked up to the ECU. Running at idle it is roughly lower 10s - 10.1 - 10.8. I have adjusted the overall fuel multiplier from 30 down to negative 30. At most would get it into the 11s but nothing more than that. Could the injector voltage/dead times be off?

 

PLX wideband installed but not hooked to the signal lines of the ECU. Car is running in the lower 10s for AFR - Don't think it would be safe for the engine to drive around at that level. I could hook the wideband up to the signal lines of the ECU - Do most wideband hondas hook back into the signal wires? I assume that it would allow for some degree of tuning itself.

 

No, not with that much change in overall multiplier.

Is closed loop enabled? That should be disabled. That will fight you unless tuned.

 

Nope it is disabled.

 

TRY 1300cc for current injector size should lean it out considerably ... keeping going up or down with that to richen or lean

whats base fuel pressure

 

Do you still have the resistor box in place with the high impedance injectors?

 

No I don't. That was the first thing I removed before changing the injectors.

 

Not sure what the tuner set to the base fuel pressure - factory fuel pressure regulator.

Wouldn't decreasing the injector size lean it out?

 

Set your current injector size to 1000cc, then change your overall fuel multiplier to -0-. Start it and see if it rich or lean. Increase overall fuel multiplier in increments of 5% and upload each time and retest if lean. Decrease overall fuel multiplier in increments of 5% and upload each time and retest if too rich.

 

How far negative would you go? I just want to make sure I'm not going past a point of no return. Thanks for the info!

 

I just tried changing some settings before we left for the weekend. Set the injectors to 1000 and the overall fuel trim to 0 and began moving down to about -30. Car is running super rich to the point of stalling at times.

I did take a datalog and a video of the car running which I can upload later tonight. Also I don't think I mentioned it but I'm running E85 as well.

Any help is greatly appreciated!

 

It's a basemap... you shouldn't be driving it at all.

 

I realize that. Car needs an exhaust made - location of tuner doesn't allow for open downpipes. You can have a loud exhaust but it still needs a muffler on it otherwise the shop can get a ordinance ticket.

I'll try out some options tomorrow when I get home.

 

Attempted to lean it out tonight - still running rich.

Set the new injector size to 1200, 1300, and 1400 still not running lean enough to get it out of the 10.1-10.5 AFRs.

 

well you obviously got some problems are you even sure your uploading to the hondata... making jumps from 1000cc to 1200 or 1400cc on new injector usually makes a substantial fuel change...

 

Yes I can confirm that it is uploading to the Hondata/ECU. I don't think I have a faulty Hondata unit.

I'm going to re-calibrate my TPS sensor to make sure no load is being applied at idle. Anyone have any other suggestions to attempt to troubleshoot?

 

I did buy the s300 unit used already installed in a ECU can't recall off hand if its a p28/p72 ECU. I do however have a socketed p72 ECU that I could swap the hondata into.

I'm just trying to eliminate any issues I may have.

 

No one said this stuff is cheap. You should have the car flatbedded if the basemap is way off. You are doing more harm than good so far it seems.

Have you asked your tuner for a basemap? Might make their job faster.

 

Yeah this is the baseman from the tuner. I'll just call up the shop and have them haul it. Hopefully they can get it up and running - Much respect will go their way - I guess I was trying to help save me some money in the end but I'll leave it to the professionals.

 

Ah, forgot you actually said he gave you the map. Happens sometimes, or maybe he guessed bad. You could tell him how rich it is and maybe he will make adjustnents for you. Normally the tuner would ask for a build sheet or parts list so they can guesstimate