hello i have a buddy with a cd5 and was wandering if there was any other ecus that will give more power than the stock or just chip the stock one?

 

The 5th gen Accord ECUs were all pretty much the same. Not like with the CB Accords where there were 3 or 4 different ECUs. However, if it is a 94-95 OBD1 you might be able to get a bit more out of using a P12 ECU from a Prelude S or the PT6 out of the CB Accord. Could try and swap in an A6 cam from a 93 Accord and use the PT6 ECU. I've never played around with swapping cams & ECU's.

Some of the CB guys may have a bit more insight into that.

The Accord ECU's cannot be chipped and tuned as easily as the OBD1 Civic/integra ECUs. Few years back there were a couple guys who were claiming that they can tune fuel and ignition on them. I haven't heard much about it recently. Most times it's just easier to get a chipped and tuned civic/integra OBD1 ECU.

What mods dose your buddy have that require a tune/new ECU, or are you just looking to get a few more p0nnies out of a stock engine?

 

With an A6 ECU the fuel maps would be wrong. Uses a different cam.

 

That is why I mentioned dropping an A6 cam in, that is as long as his buddy has the non VTEC F22B2. Rocker assembly in the A6 & F22B2 are the same.

lobe heights
F22B2
Int. - 38.6mm
Exh. - 38.8mm

F22A6
Int. - 38.8mm
Exh. - 39mm

Duration is also the same from what I remember. Biggest down side is the head flow differences. Flow of the A6 head, hands down. The F22A6 & B1 also have larger diameter intake valves than the B2.

If he has the F22B1 VTEC there is no better ECU that can be swapped!

 

its a bone stock b2 with simple boltons and a complete rebuild and wanting alittle bit more power and its a 1996

 

OBD2....bamp bamp bamp baah! Nothing plug and play for an OBD2 F22B2.

It will require an aftermarket EMS with a tune or the use of an ECU conversion harness and one of the above mentioned OBD1 ECUs. Or you could look into running a chipped OBD1 (civic/integra) ECU and having it tuned.


Adding an A6 camshaft, doing the F23 Intake manifold mod and using the A6 ECU might give you a bit of an OEM jump. However, most bolt on parts (I/H/E) the stock ECU will compensate for. He should look into running a tunable EMS if he really wants to get as much out of his bolt-on parts as possible.

 

I'm kind of in the same boat as this guy but I bought a chip off ebay that had to be soldered into the ecu, I'm running a 1995 Honda Accord Ex with a f22b1 V-tech the chip is Supposed to remove the rev limiter and adjust when the V-tech becomes active. Well i got it installed today and there is defiantly no rev limiter, i got it up to 7,500 rpms today but the engine didnt sound happy.. i was wondering if anyone knows at what rpms the engine blows? I dont want to have to find out myself for it is my daily driver... any help would be awesome.

 

Why did you rev your stock F22B1 to 7500 RPM?

Can you post pictures of the chip and how it was installed? Or can you provide a link to the chip that you bought. Was this installed into a stock Accord ECU?

The stock VTEC Accords rev limiter is set above 7500. IIRC it is set around 8200. As for the RPM that an engine blows, it could blow at any RPM if the engine is not healthy or tuned properly. Ebay chips aren't usually very reliable. Besides, your stock engine is not going to be doing anything but making noise and burning gas at any RPM over 6k anyway. Kind of useless to rev it to 7500 if you ask me. Higher RPM doesn't always mean more power...

 

First picture is of the cu and chip not installed. Second is chip installed. Its there anything I can do to make use of the higher rpms?

 

Never knew that JUN made a ROM chip for the Accord. Looks like that was printed from an inkjet onto an avery label. Any chance that you could peal that label off and see what is written on the chip?

What are the specs for the chip, do you have any info on the tune? Such as the VTEC engagement point or if the fuel and ignition maps have been altered? IMO it is probably a stock F22B1 ROM with a bit of fuel added. Considering the stock Accord EX P0A ROM doesn't have a speed limiter. The rev limiter is set to 8200 to begin with and VTEC is set to engage from 2300+ depending on engine conditions.

Only thing I can see them changing would be having VTEC engage later. That is not going to give you anything performance wise. You might feel it more, but it will not give you any more power. You may also notice that your fuel economy my start to drop as well.

 

· Expect about 7-20 horse power gain.

· V-Tec: 2500 rpm

· Redline: 8500 rpm

· Includes detailed instructions and necessary all hardware.
this could all be complete bs for it is ebay but this is what it says it does...
any advice on how to get more HP out of my engine with out spending a whole lot?

 

To be honest, adding power costs money. What are your power goals and what is your budget? Intake header and exhaust can be managed with a stock ECU, anyhting more than that and you will require a tunable EMS (chipped OBD1 Civic/Integra ECU) and a dyno/street tune.

When a seller lists it as V-Tec that is kind of a bad sign right off the hop, it's VTEC. Having it set to 2500 is no big deal ether. Also the stock F22B1 will never make power past 5500-6000 RPM so having a red line set at 8500 is not a bonus.

I wish Ebay would do something about these bogus dealers. However, it is buyer beware and there will always be snake oil salesmen out there. It is unfortunate that you spent $30, plus possible installation costs, on something that isn't going to give you any gains. A new set of plugs and wires probably would have been a better investment.

Best bang for your buck is to make sure that all of your routine maintenance is up to date and that all of your ignition and fuel components are working properly. Suspension and brakes would be another area of concern. Once all of that is up to par you should look into power adders.

Are you looking to stay naturally aspirated or is forced induction (turbo) a possibility? Nitrous and turbo are probably your best bang for your buck. N/A is a bit pricey and harder to extract all of the engines ponies.

 

I baby my car oil change every 3,000 miles. all maintenance stuff is perfect.

I would consider turbo if i didn't have to take it somewhere to get it installed I'm not terrible with cars just not too great either but I'm very into them so when i start something for it I normally follow through with it.

Is there some kind of instructions or something like a tutorial i could follow i have every tool you could imagine. and I'm not sure what to buy? some say ebay piping and good waste gate and turbo. but i just don't know... also if you know any discount sites that would be great I want to get a new cold air intake, new headers and exhaust.

by the way thank you for all your help :D

 

Speaking of F22 ECU's, just tried the P12 manual ecu from the Prelude S yesterday...HORRIBLE swap for our EX F22b1 Accords, car was bogging like crazy...and lost power during 4-6K...felt like a lot of low end power but no power after 4k.

 

The P12 is non VTEC and the F22B1 is VTEC. That could be why there was no power after 4k. Using the non VTEC ECU, you were basically only running on 1 1/4 intake valves per cylinder. While maintaining the regular 2.2l fuel maps. That would have definitely choked you off in higher RPM.

 

What is the stock ecu for the f22b1 obd 2? Im having a bogging issue after 4k and i think it cause its the wrong ecu but also my vtec is not wired in either

 

Check your original thread. No need to post the same question in multiple threads. Just have to give people some time to respond.