So my chipped ECU isn't going too well right now. So much for a basemap. But putting the OBD1 ECU in there made it so I could not use my Ultra-gauge. I like using that because I can monitor everything going on in my car.

Is there any other option of getting more performance from computer tuning with an OBD2?

 

Have you tried having your chipped OBD1 ECU tuned? Base maps are just that, a base on which to start tuning your car. They are not going to give you the max performance out of your setup.

 

Not a basemap sorry, it has the data for an f22 with the same mods as mine so it should be pretty close.

my cars idle fluctuates and stalled after a high rev with the chipped ECU. Theres a loss in performance. However, I think it may be that a sensor that is disabled by the chip is offsetting a faulty sensor already in my car- however, that faulty sensor is not triggering any check engine codes and is overlooked.
Say theres a sensor that works with the knock sensor but with the knock sensor disabled the other sensor now has more influence over the engines behavior.

 

that's called a basemap

 

x2 That is still considered a base map.

What F22 engine and what mods have you done to it?

A fluctuating idle can come from a simple vacuum leak or an air bubble in your cooling system. However it sounds like you need to tune that basemap. Do you have any dyno tuners in your area? If you do you should talk to them and see what they can do for you.

 

I think theres one dyno here but they charge an arm and a leg- prob cuz theyre the only ones.
I have an F22b1 in a 97 Accord Ex. The mods are a CAI, 421 header and performance catback exhaust. The basemap used is from an F22b1 with the same mods.

There are no vacuum leaks. And for the record the EGR is clean.

I have been having an issue with the car surging when it goes from open to closed loop but after that it works fine. I was going to address this issue when I did my f23 manifold swap. Id clean out the IACV. However, with the chipped ECU, the car does much worse. I'm thinking what may be causing this brief issue with the stock ECU is enhanced with the chipped ECU cuz some sensors are disabled. So what would it be?

I could isolate the faulty sensor if I knew what works together that does not with the chipped ECU.

 

I'll be honest with you here. Those mods will run there best with a stock ECU. No real need for tuning with I/H/E upgrades. The stock ECU can handle the bolt on stuff very easily.

At the very least you should put in a stock ECU to see if it is the chipped ECU causing the surging idle.

 

The ECU is not the issue. There is a faulty sensor or something that causes an issue with the stock ECU in. That when the car goes into closed loop the engine surges under load.

With the chipped ECU, the engine is constantly struggling. It seems to be running lean and is struggling to stay turning.

Speaking of lean, I though that with less back pressure from the performance exhaust the car runs lean. The chip was to correct that. I've lost low end torque from the bolt ons.

 

If the issue is a faulty PGM-FI sensor the stock ECU will detect it and throw a code and illuminate the check engine light.

The stock ECU can handle an upgraded exhaust system. If it couldn't it would throw codes for a lean mixture.

Leave your stock ECU in for a while and see if there are any diagnostic trouble codes that show up. Other than that you could find someone with a laptop and tuning hardware to datalog your chipped ECU. That way you would be able to see what the sensors are doing.

 

Well Ive had these mods for quite a while. About a year. The issue is not causing a check engine light and only happens during that one event. However, I feel that the chipped ecu is causing the issue to happen constantly. Which brings it back to my original thought- that a disabled sensor from the chipped ECU is causing the issue to happen constantly while before it was keeping the system in check. Does that seem possible?

But
The 'find someone' method doesnt work around here for me. My resources are very limited. I'm looking for ways I can do all this myself. How can I hook my laptop up to my computer to get a more in depth look at whats going on? I have an ultra-gauge but it does not work with the OBD1 ECU. Just my stock.

I also looked into reflashing my stock ECU. I don't wanna send it in. How would I go about this myself? All I saw was hondata which was way too expensive. I looked around for a HIM but cannot really find any.

 

Where are you located?

 

You will need a wideband also one of the following after tons of reading

Neptune
Crome free with free log and a hulog also a chip burner with reusable chips
Hondata
Ectune

 

Im in syracuse and I was thinking about a wideband sensor... I have crome and might get a chip burner but only if I can get a basemap together that suits what I want. The guy I got the chipped ECU from can also do that for me but I wanna send him a basemap I want. Anyone help out with that?

But I also have to get this issue sorted out. I think with the stock the problem only occurs with certain events. With the chipped ECU it happens constantly. No stable idle or performance at all. So what sensor would not throw a CEL, be fine most of the time with the stock ECU- except when I switch from open to closed loop- and severely disrupt the engine idle with a chipped ECU?

 

There are no PGM-FI sensors that would not throw a code. If there is an issue with one of the sensors the stock ECU will throw a code.

At what time do you consider the ECU switching from open to closed loop? What happens to your engine at this particular time? At what RPM, Speed and throttle position is the issue happening?

It would help if you gave a better description of your issue. That way someone might be able to help you out a bit quicker.

 

Best bet is to listen to the advice here. Stock ecu is plenty for your set up. Or go out and spend $1000 + on tuning items and tune it your self.

Xenocron could be a option for a base map .

 

With stock ECU I have lost low end torque. Thats why I wanna get that torque back though some form of manipulating an ECU. I can tell its running lean but not lean enough to trigger a CEL.

I have a ultra-gauge that shows when the engine switches to closed loop. I can also see the upstream o2 sensor voltage start to move at that point. When the issue happens the only things I can see are that the MAP sensor will fluctuate and even go negative- it reads the PSI not voltage- and the timing will be off a bit (possible because the engine is struggling)

The exact scenario is
I turn on the car, drive down the block, car goes into closed loop. I start to accelerate again. The car either bucks and surges as I push on the gas or if I hold the throttle down- no matter how low- the car will maintain a very slow speed until a few seconds later everything goes back to normal.
Sometimes if I am moving slowly, that is balancing the clutch and throttle, after the engine will idle low but go back to normal.
And i dont think its a clutch problem cuz otherwise Id feel it in the drivetrain.

The throttle position sensor seems to correspond with my gas pedal. The EGR, IACV opening and throttle body have been cleaned out. Could be a bad map sensor from what I see, but I'm not sure...

So what brings this all back to this thread is that with the chipped ECU- I think its a p28, maybe a p61- the engine will idle low and unstable and when I put it under load it stalled afterward.

This same issue had happened before with the stock ECU but now that issue had been reduced to what I described above after cleaning everything out (including fuel system) and a tune up.

Sorry, I dont explain things well.
Basically-
stock ECU: occasional idle and consistent surging problems
chipped ECU: constant idle and surging problems
No CEL, no sensors behaving oddly on my ultra-gauge. So I have no idea aside from the IACV and MAP sensor

I should also add that I have given my car since the end of winter to show up with a CEL for these problems.