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Discussion Starter · #1 ·
Just swapped in my IN600 injectors in preparation for my turbo install. I wanted to get them in and at least have Idle set up before making any more changes. Well ether I am a dumbass and I am doing something wrong or there is something wrong with my setup already as I cant even get the car to idle right. Car ran fine before changing injectors. Hoping I just missed a setting or have something misconfigured. Seup is as follows:

Socketed p06
cobrartp
hts 2.21
in600 injectors
d16y7
in a 95 cx
 

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258 Posts
Discussion Starter · #3 ·
Cranking fuel seems fine it will start just wont stay running on its own. Wideband says maxed out lean will pull a plug and verify.

I have been blindly fiddling around and have figured out that if I increase the dead time by alot it clears up and idles and revs fine. It is supposed to be .69 and i have to have it set at 3 to get it to idle and run well. Im starting to wonder if its my ecu acting up I have had it a long time and it has gotten wet a time or 2. I have a bunch more so I will socket another one and see what that does.
 

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93 Civic HB SI, 95 Civic HB CX
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ok, revert your dead times back to whatever IN called for, leave the fuel and ignition maps alone/reload the stock basemap if you already messed with it, and instead play with Engine Coolant Temp modifiers, under the ECT correction menu.

If the car tries to start, but dies, add a bunch of fuel to the ECT correction table in the cold/ambient temp areas, watch your wideband, and add/subtract fuel as it warms up. HTS should highlight/indicate where ECT and which range of corrections are being acted upon on the scale, and you'll need to add/trim fuel out as needed according to your wideband.

The ECT fuel corrections table is an interpolated range of fuel "in addition/subtraction to" whatever is already programmed on the fuel map itself, over the actual ECT value.
  • If the values in the ECT fuel corrections table are positive, you'll be adding X amount of fuel to the cells found on the map, for the given Engine Coolant Temp.
  • If the values are negative, you'll be subtracting X amount of fuel to the cells found on the map, for the given Engine Coolant Temp.
Mess with ECT corrections FIRST, before ever touching the actual fuel map itself, especially if you are starting from a stock honda basemap. The stock basemap fuel curves are pretty good templates for first startup, you may just need more/less fuel overall, which is what ECT/IAT corrections are for.

Only once the engine is at operating temp, should you mess with the actual fuel/ignition tables themselves. Until then, only adjust the ECT/IAT modifiers.

Leave IAT modifiers alone for now, just mess with ECT fuel correction modifiers. IAT modifiers can be tweaked later, but not really necessary for initial start up.
 

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Discussion Starter · #5 ·
Had a semi warm dry day today so I made a new basemap to reset everything I had been messing with and tried adjusting just the ect corrections. The car will start and idle but is still off the chart lean even with 100 in the correction. I checked a plug and it agrees with the wideband. I think something is really wrong with the ecu itself or the wiring. I have chipping kits on the way so I will do up another ecu and give that a try next.
 

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So put a 200 (or more) in the box and try again.

The number in the modifiers isnt a percentage, neither are the values in the fuel map. Just know that bigger numbers mean more fuel, lower numbers are less. Those numbers ultimately go into a pulse width control algorithm that the ECU runs. Give it as much fuel as it needs in the modifiers. It wont hurt anything.

You said it runs fine with a stock map and stock injectors, so why do you think something is wrong with the ECU or wiring?
 

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Discussion Starter · #7 ·
I only lets me put in up to 98 for some reason. The reason I suspect the ecu is I have had issues with it in the past doing weird things like randomly going into limp mode and not reading the tps and map.
 

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Discussion Starter · #8 ·
Finally had some time and decent weather to mess with the car today and got it running pretty good on the new injectors. It turns out I was being a dumbass and adjusting the wrong offset lol. After adjusting the fv offset and not the deadtimes offset the car seems to run like stock. I did have to adjust tip in some as the auto settings pulled too much out and it was bogging on tip in. I will start it from cold tomorrow and see how cold start goes. Cant wait to start installing my turbo kit and seeing what other kinds of wacky issues I can run into. Its an ebay kit so im sure there will be lots but I will start a new thread for that fun. Thanks to anyone who offered advice.
 
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