Running lean when warm with ITR base map

[keys]

I have an EG with a GSR block that has been converted to an ITR. Here is the setup

ITR pistons, Intake Manifold, Head, Throttle Body
P28 ECU with s300 running the ITR base map
Intake, Header and Exhaust.
Innovate wideband which I have not hooked up for data logging yet. The wideband is not providing signal to the ecu

The only change to the base map is disabling the knock sensor and calibrating the TPS.

When the car fully warms up my wide band shows 14.7 - 15+ when under load and WOT. I've tried calibrating the TPS and running only in open loop (runs leaner). When cruising (closed loop) the car hovers right around 14.7.

With my setup should I expect to add more fuel to get a more expected AFR? Is there there some other general calibration issue I should be concerned with? I wouldn't expect my setup to require much more fuel than the ITR base map.

I would have included a datalog but my laptop battery wont hold a charge. Any ideas until I can get a datalog going?

[Luke]

the combination of the ITR block and the GSR head gives you a higher compression rate, so the air/fuel-mixture will be compressed more and gets warmer before detonation.

due to your I/H/E the flow should be better than stock, that provides you more air into the chambers than regular.

adding fuel will get you to a save zone at WOT.

best regards Lukas

[keys]

the combination of the ITR block and the GSR head gives you a higher compression rate, so the air/fuel-mixture will be compressed more and gets warmer before detonation.

due to your I/H/E the flow should be better than stock, that provides you more air into the chambers than regular.

adding fuel will get you to a save zone at WOT.

best regards Lukas

Its a b18c1 block with a b18c5 head which I think keeps the compression ratio stock at 10.6:1. I wouldn't think the IHE would add so much flow that I would go so far lean. Thanks for the reply.

[ITR1102]

I have an EG with a GSR block that has been converted to an ITR. Here is the setup

ITR pistons, Intake Manifold, Head, Throttle Body
P28 ECU with s300 running the ITR base map
Intake, Header and Exhaust.
Innovate wideband which I have not hooked up for data logging yet. The wideband is not providing signal to the ecu

The only change to the base map is disabling the knock sensor and calibrating the TPS.

When the car fully warms up my wide band shows 14.7 - 15+ when under load and WOT. I've tried calibrating the TPS and running only in open loop (runs leaner). When cruising (closed loop) the car hovers right around 14.7.

With my setup should I expect to add more fuel to get a more expected AFR? Is there there some other general calibration issue I should be concerned with? I wouldn't expect my setup to require much more fuel than the ITR base map.

I would have included a datalog but my laptop battery wont hold a charge. Any ideas until I can get a datalog going?

Why are you messing with open and closed loop if you are talking about WOT and under load? You don't have your oxygen sensor set to compensate into the higher load columns do you? (you shouldnt)

It is a basemap and you have modifications done. You are going to have to tune it to get the correct mixture. The basemap didn't run my completely stock ITR perfectly. It is a basemap. Either get a new battery, or invest in a $30 power inverter and plug that sucker into the cig lighter.

[keys]

I have an EG with a GSR block that has been converted to an ITR. Here is the setup

ITR pistons, Intake Manifold, Head, Throttle Body
P28 ECU with s300 running the ITR base map
Intake, Header and Exhaust.
Innovate wideband which I have not hooked up for data logging yet. The wideband is not providing signal to the ecu

The only change to the base map is disabling the knock sensor and calibrating the TPS.

When the car fully warms up my wide band shows 14.7 - 15+ when under load and WOT. I've tried calibrating the TPS and running only in open loop (runs leaner). When cruising (closed loop) the car hovers right around 14.7.

With my setup should I expect to add more fuel to get a more expected AFR? Is there there some other general calibration issue I should be concerned with? I wouldn't expect my setup to require much more fuel than the ITR base map.

I would have included a datalog but my laptop battery wont hold a charge. Any ideas until I can get a datalog going?

Why are you messing with open and closed loop if you are talking about WOT and under load? You don't have your oxygen sensor set to compensate into the higher load columns do you? (you shouldnt)

It is a basemap and you have modifications done. You are going to have to tune it to get the correct mixture. The basemap didn't run my completely stock ITR perfectly. It is a basemap. Either get a new battery, or invest in a $30 power inverter and plug that sucker into the cig lighter.

I switched to open loop only as I saw other people suggest it in other threads regarding running lean.

I understand its a basemap and I will have turning to do for a perfectly running engine. I just didn't expect a motor with basic bolt ons to run so lean with the itr base map.

My concern is getting the potential problems out of the way before I start modifying the fuel tables. I don't want to spend a bunch of time tuning and then find out down the road that I forgot to uncheck a box, change a bad sensor, etc.

I'm borrowing another laptop tonight and should be able to do some data logging. Thanks for the replys so far.

[keys]

Here is a short datalog.

[AREA876]

What band wideband are you using?. Use a different wideband input in the parameter settings (eg. D10...D12...B6) as your datalog is showing a rich mixture. Use close loop when you are finish tuning the car.

[Luke]

my suggestion: don't do anything and take it to a tuner, who knows what he is doing. that won't cause any headache ;)

best regards Lukas

[keys]

What band wideband are you using?. Use a different wideband input in the parameter settings (eg. D10...D12...B6) as your datalog is showing a rich mixture. Use close loop when you are finish tuning the car.

I have an innovate wideband but have yet to hook it up for datalogging. I've only had the s300 for a few days now. I'm hoping to have the wideband hooked up this weekend.

[keys]

I got the wideband hooked up for data logging, and it seems to be working pretty well. I did some tuning in the fuel maps an realized I'm approaching 100% duty at 8000 rpm while still running a bit lean. I'm starting to think my problem is with the fuel system.

I'm pretty sure my fpr is from a gsr and my fuel pump is a stock 92 civic si pump which has been around for 245,000 miles.

Turing the key to on I show 40 psi. I think I'll check the vac off fuel pressure in the morning when I'm not worried about waking up the wife and child.

[keys]

I think I got it worked out. I found and old adjustable FPR in my garage. I brought he fuel pressure up to 55 PSI with the vacuum pinched. I'm now seeing results that I expect.

[Luke]

you know, that your injectors give you the named amount of fuel only with a certain fuel pressure and everything above that pressure will gain fuel temperature and can destroy your injection and fuel spray?!

best regards Lukas

[keys]

Do you think my fuel pressure is too high? I brought it to the top end of the specs for a gsr according to my shop manual. The manual says the pressure should be 48-55 psi.

[crucian]

I have an EG with a GSR block that has been converted to an ITR. Here is the setup

ITR pistons, Intake Manifold, Head, Throttle Body
P28 ECU with s300 running the ITR base map
Intake, Header and Exhaust.
Innovate wideband which I have not hooked up for data logging yet. The wideband is not providing signal to the ecu

The only change to the base map is disabling the knock sensor and calibrating the TPS.

When the car fully warms up my wide band shows 14.7 - 15+ when under load and WOT. I've tried calibrating the TPS and running only in open loop (runs leaner). When cruising (closed loop) the car hovers right around 14.7.

With my setup should I expect to add more fuel to get a more expected AFR? Is there there some other general calibration issue I should be concerned with? I wouldn't expect my setup to require much more fuel than the ITR base map.

I would have included a datalog but my laptop battery wont hold a charge. Any ideas until I can get a datalog going?

This is a simple diagnoses. "CAR RUNS LEAN WHEN WARM." That alone should have sent you straight to your fuel-water compensation if you meant that it runs lean when engine is warm. Now if it ran lean as the air outside gets warm, check your fuel-air compensation. Im looking at it right now at it's showing crazy numbers.