ECU questions?

[92_escort_gt]

i just did the Exhintake mod on my 92 escort gt, and what a difference it made!! anyway, a friend who owns a miata was telling me about a mod to the ecu where you can change the fuel cut out of the stock ecu by changing the crystal. Is the ecu on any BP engine the same (miata, EGT, Protege) aka can i do the miata ecu mod on my EGT? thanks

[Lex]

changing the crystal makes the ECU think you are driving at a lower RPM than you actually are - not the best idea IMO. Sure you can do it, but is it really worth it? I don't see how much more you can get out of an NA BP past the fuel cut.

[92_escort_gt]

Well with the new cam it keeps pulling all the way up to the fuel cut, so it would be nice to be able to redline a little higher. Is there a good piggyback that people are using on turbo engines (i'm planning on going turbo) that you can adjust the redline?

[therieldeal]

there is no need to rev higher than that, especially if you are going to be boosted. i dont rev my turbo BP nearly as i high as i do the stock one, there simply is no need.

the hydraulic lifters start having issues at ~7400 ive been told, so you'd need to switch over to solid lifters and new cams in order to go higher than that anyway. i dont see an extra 200 rpm doing you any good

[Loco_R]

Hold on what is that thing about the crystal?

[ryan1]

i just did the Exhintake mod on my 92 escort gt, and what a difference it made!! anyway, a friend who owns a miata was telling me about a mod to the ecu where you can change the fuel cut out of the stock ecu by changing the crystal. Is the ecu on any BP engine the same (miata, EGT, Protege) aka can i do the miata ecu mod on my EGT? thanks

off the topic a little, but did you use a aftermarket cam gear or drill a oem cam gear?

[Lex]

Hold on what is that thing about the crystal?

It's a hack to raise the stock rev limiter. Stay away from it.

[Loco_R]

If there is a thread about it i will like to know a little bit more about it, at least for a couple of n/a fellows, from here. Where i can find more info about it.

[rbluemx6]

If there is a thread about it i will like to know a little bit more about it, at least for a couple of n/a fellows, from here. Where i can find more info about it.

Its not worth the effort to try it.

[Loco_R]

Thanks that´s a very usefull info. At least tell me what is about!