lots of EPROM chip questions

[danyz250f]

I think I want to get an EPROM chip. I have heard that you can eliminate the phantom knock with one, but does this also eliminate being able to read real knock. Also you can get a stutter box programed into one, and what and how does this work. Is it safe to build boost in nutral or does it only build boost in gear?

Also I am building a new 6 bolt with wiseco pistons, scat rods, and eliminating the balancing shafts, and of course getting the rotating assembly balanced. If I get a EPROM chip what can I set the rev limiter at?

Also how do I know if I can use an EPROM chip with my ECU. What is socketing, is this only needed for non EPROM ECUs?

Thanks for you help

 

[Spooling99]

The chip will only work with Eprom ECU's, If you talk to Andy on the boards he'll figure out what you would like to run for your rev limiter at. www.dsmchips.com That should help you out alittle as well.
-Adam

 

[titogs95]

What can you do for the dreaded "Phantom Knock"?
The guys on the DSM-ECU Group have come up with a relatively safe way to deal with "true" phantom knock. We tell the ECU to just ignore all knock when you are NOT under boost! I have many satisfied customers who formerly had horrible PK issues. Just mention it in the "Comments" box if you need it.

as you can read in th post above it doesn't eliminate the PK. it just ignore it until it get boost. or you can eliminate it at your own risk.

Also I am building a new 6 bolt with wiseco pistons, scat rods, and eliminating the balancing shafts, and of course getting the rotating assembly balanced. If I get a eprom chip what can I set the rev limiter at?

That won't help much to rev higher unleast you have a built head to hold high RPM.

Also how do I know if I can use an eprom chip with my ecu. What is socketing, is this only needed for non eprom ecu s?

See if you have Eprom. If you do, it need to be socked. wich it mean you can add/remove the chip without the need of soldering it all the time. just, an adaptation. see the the pic below as an example....

 

[danyz250f]

I have been reading the dsmchips site for like an hour and that is the coolest thing ever.

I have to have an eprom.

step on; I am pretty sure I have an eprom ecu since it is a 92 awd and I had the cover off a couple months ago and it lookes alot different from a 90 non eprom ecu. I will have to check again to make sure.

Step two; I think I can socket it myself it looks pretty straight formard, but were do I find this socket thing, and is there any problem with just soldering the chip on the board. I dont see why you would need to take it out very much.

Step three; deciding on the features I want.

 

[Quasimondo]

I think I want to get an eprom chip. I have heard that you can eliminate the phantom knock with one, but does this also eliminate being able to read real knock. Also you can get a stutter box programed into one, and what and how does this work. Is it safe to build boost in nutral or does it only build boost in grear?

The chip eliminates 'phantom knock' by ignoring the knock sensor at low throttle levels which is when phantom knock usually occurs, it will still check the knock sensor when you're going WOT.

The stutter box works with a special wire that is wired up between the ecu and the clutch safety switch. With the clutch depressed and the switch engaged, the ecu will drop the rev limiter from 7500 rpm's to whatever you have the stutterbox set to. They have a selectable setting that allows you to set the stutterbox to 5000, 5250, 5500, 5750, and 6000 rpm.

Also I am building a new 6 bolt with wiseco pistons, scat rods, and eliminating the balancing shafts, and of course getting the rotating assembly balanced. If I get a eprom chip what can I set the rev limiter at?

Your redline will be more dependent upon the valvetrain than the bottom end. If you want to raise the rpm's you'll have to put in stronger springs that will keep the valves from 'floating' open at high rpm's.

[/quote]Also how do I know if I can use an eprom chip with my ecu. What is socketing, is this only needed for non eprom ecu s?

[/QUOTE]

To socket the ECU, you'll have to install a 14 pin DIP socket (available at your local Radio Shack). Most folks socket the ecu should they ever upgrade the chip they have, but it isn't necessary. You can just solder in the replacement chip and be on your way.

Non-eprom ecu's can't be socketed because they don't have the eprom chip in the first place. All of the programming is intergrated into the ecu's processor, and we haven't found a way to upgrade those yet.

 

[titogs95]

BTW what are your goals? because DSMLINK might be a lot better for you. Tunning wise...

 

[danyz250f]

Yes I plan on upgrading the head but not for a while. But while the head is off I will get new valves and then later I think change the springs lifters and cams.

I looked into dsmlink and it is not for me I already have a afc and maft so I would rather get a $100 chip. Plus my laptop has no serial port. So it would be a pain to use dsmlink.

I guess I will check to see if I have an eprom right now.

 

[Spooling99]

Easiest way to tell if you have a eprom is to open it up and there is E with 4 #'s behind it. It will be the eprom #.
-Adam