Modding ECU clock?

[Shakedown]

I've heard about being able to change the RPM's which the car shifts at (on an automatic of course). I heard you take out the ECU clock chip for a couple of minutes, then put it back in and start up the car and floor it and get it up to however many RPM's you want it to shift at, then release the gas and it sets it at that RPM. But wouldn't you need to do it for each gear since it shifts at different RPM's? Could somebody please tell me how this works if I don't have it down quite right, and perhaps if its worth it.

[SteveDX89]

Wrong, wrong, wrong, for these cars at least. The ECU has nothing to do with the transmission.

[accordlxi2.0]

ummm dude, i can't agree with ya, i have proof, but thier are some e-trans out thier.
mine's has it, i need to take pic's but my dad gotta get a new battery for the digi-cam.

but here are some links though:

http://chineseguy.8m.com/cgi-bin/i/p...8/88b-acc1.jpg

here's another:

http://cgi.ebay.com/ebaymotors/ws/eB...&category=6755


but as for the ecu itself has a clock umm, no
the ecu depend's on speed and throttle pressure, and on efi model's the tps also, and a few other thing's.

so you whould more than likely have to adjust the t/v cable.

[SteveDX89]

Ok, since DX and LX models don't have ECU's, how is the tranny controlled?

[accordlxi2.0]

i knew this would come up.
i know for a fact the prelude has a e-tran's thier's is an separate ecu for it too!
and the last time i looked under my seat on my 88 lx i had an ecu, which work's, compared to the 86 ( which did'nt work, hmmmm)

[shepherd79]

ummm dude, i can't agree with ya, i have proof, but thier are some e-trans out thier.
mine's has it, i need to take pic's but my dad gotta get a new battery for the digi-cam.

but here are some links though:

http://chineseguy.8m.com/cgi-bin/i/p...8/88b-acc1.jpg

here's another:

http://cgi.ebay.com/ebaymotors/ws/eB...&category=6755


but as for the ecu itself has a clock umm, no
the ecu depend's on speed and throttle pressure, and on efi model's the tps also, and a few other thing's.

so you whould more than likely have to adjust the t/v cable.

Our cars have no E-trans. it controls with a simple cable. the more you pull the harder itwill the shift.

[accordlxi2.0]

what the f%$k ever.
look i know that my 86 did'nt have these solenoid's on the top, but this one does, so what are these trans universal or something? . . . . .
plus noone's perfect, i seen the damn solenoid's i thought maybe this one had a e-trans so what hit me with a 2x4!!!

[SteveDX89]

The box under the seat on your lx is not an ecu. It's a solenoid controller. It's for all the little shits inside the black box in the engine bay. And yes, these trannies are universal. You can use any A20 trans on any A20 engine.

[Shakedown]

so I'm lost in this, does the ECU clock control the shifting or not? Well the guy who showed me how to do it actually pulled out the ECU clock chip so I know I didn't misunderstand anything, and apparantly he had done it to a couple of other Honda's and it worked. So if the ECU clock doesn't have anything to do with it than what would I have to do to change that?

[smufguy]

so I'm lost in this, does the ECU clock control the shifting or not? Well the guy who showed me how to do it actually pulled out the ECU clock chip so I know I didn't misunderstand anything, and apparantly he had done it to a couple of other Honda's and it worked. So if the ECU clock doesn't have anything to do with it than what would I have to do to change that?

bro, here is the deal. NOthing too confusing. our ecus dont control anythng besides fuel injection okay? even the ignition timing is done under vaccuum. so dont think our trannies are controlled by the ecu. its just the cable. On the 4th gen and up (talking about accords) they were controlled by ecus. cause of their sports mode controlled electronically irrespective of the throttle.

and next time, check the lil status of a member when he replies. cause guaranteed if he is a Se-i user or above (check also his post count and where he actually hangs around) to get some credibility.

accordlxi2.0: why the outburst? U been here long enough to know that ur carb car does not have a ECU. the shit u got is just an emission box that, like steve said, controlls ur emissions and no more. And dont compare a lude to the accord.

[accordlxi2.0]

first off i stand corrected, once i got done with my shit, i went to my car and looked and where the wire's going to the solenoid went into the rest of the harness, i kinda tugged it and it was'nt connected . . . . . . . .
. . . . . . .. . . . . i don't think i said it right stevedx89, what i meant to say was, okay now since the 3geez don't have a e-trans, i did'nt mean if any a20 tranny was universal, i meant that, when your original tranny goes to shit ,they replace it .But this has the solenoid's, but the 3g has no control over shift's , but it'll still shift, that what i meant.

like i said noone's perfect, so what i made a fucked up mistake, thought it was e-controlled just 'cause i looked at the solenoids,b ut then once i pulled those wire's and seen that they were just there.
it's really no reason to resort to some name calling.

BTW, shakedown if you want to control your shift's like i said before your gonna have to adjust your t/v cable.



UPDATE::::::::

i just read everything over and noticed that shep edit.
that's why the outburst.

[Shakedown]

Hmm...well right now I'm starting to learn all this car stuff, so bare with me, you were at that point once too. I'll have to talk to the guy again, make sure I completely understood him (which I'm positive I did, but it can't hurt to ask again).

Damn me, I wish I had a manual

[SteveDX89]

Hmm...well right now I'm starting to learn all this car stuff, so bare with me, you were at that point once too. I'll have to talk to the guy again, make sure I completely understood him (which I'm positive I did, but it can't hurt to ask again).

Damn me, I wish I had a manual

Yes, manual trannies own. I love them.

[accordlxi2.0]

oh wait someone else had done this??

and thank you for understanding me, it's not like i said, hey if ya bang a prostitute you won't catch a desise.

well if you adjust the t/v cable that'll help your shift's.
i don't know if it happenes on honda's but ford had a big problem with this.
if the t/v is out of adjustment then it screw's up the tran's.

[Shakedown]

oh wait someone else had done this??

Ya a guy I know at a garage called Westside Customs in Hillsboro, Oregon did it to his Honda and some of his friends Honda's. Maybe there's more to it, but somehow he changed the RPM's

[shepherd79]

take 12 mm wrench and adjust the damn TV cable if you want your tranny to shift at higher gear. it is not that hard to understand. by adjusting the TV cable, you will allow tranny to shift at higher RPM, but that is about it.
if you still convinced that there should be something to do with ECU, take it to that shop of yours and let them rape you just to tell you that they can't do it.

[accordlxi2.0]

BUT, i'm just guessing right off, since you wanna raise the shift point's past the redline or no??

[smufguy]

u cant raise the shift point above the redline

[HondaBoy]

hmm, i think the only way to get to different shift points with our automatic tranny is with a performance shift kit. this would probley be because the 3gee's auto tranny is fully hydrolic isnt it? oh and yeah they said before that something about messing with the tv thingamajig.

[smufguy]

or hold the bitch in and do it manually

[Shakedown]

Well, I was bored last night so I took out the ECU Clock chip in the fuse box in the engine bay for a couple of minutes, put it back in and started up the car and floored it up to 4k RPMS then released the gas and it did change the RPM's somehow. Normally it shifts at 2.5, 3, 3.5 but after that it shifted at 3, 3.5, 4. It must've reset after I turned the car off though, but it somehow affected the shifts.

[smufguy]

pulling the ecu fuse on the car with a tranny that is not controlled by the ECU and it affected it huh? Well its just a coincidence man.

[Shakedown]

Hah, I tried it again and set it too high at 5k, now I have to floor it to get it to third gear...haha, gotta fix that

[accordlxi2.0]

okay first off, look around the tranny do you see two solenoid's???
i have those but it's not conected to anything.

i'm not saying that i don't belive and i'm not saying i belive you . . . . . .

[smufguy]

have u ever talked to a tree? well we all did with a buncha ppl here talking about their ecu controlling their ecu. End result?? ignorance and failure to realize the fact, aparently still exists.