[Salvisol82]

Ok this is an easy question. I recently bought a jwt ecu but on the outside the only markings besides the stock markings are the settings for the ecu but they're written in permanent marker.

Is this what JWT usually does with ECu's should I be worried? I want to send it in for a reprogram thats why I bought it.

Do they go by outside markings or do they actually open it up to see if it has a previous JWT program.

 

[KrackMnkysNick]

Yes, they usually write onto the ECU what engine it is and what comp and inject size.

 

[chriscar]

JWT adds a daughterboard (an additional circuit board) to the ECU. On that daughterboard is an EEPROM which holds the updated ecu code, on the EEPROM is a serial number. JWT has a database of all serial numbers, so by giving them that number, they can tell you exactly what that ECU is programmed for. FYI - JWT will cross ship you a new EEPROM if you need an update, this way you won't have any downtime. Once you get the new EEPROM, you install it and send the old one back. If they don't get it back they charge you something like $200 or $250.

C

 

[Salvisol82]

Oh sweet. Thanks for the input I didn't know that about the jwt ecu. Do I need special tools to take the eeprom out? I don't want to just pull it out and ruin it.

 

[97SE-R C2]

Grounding straps so static electricity doesn't damage the chip. You can pick them up at Radio Shack for 15$. Most of the time you can use a small paper clip to pop it out, but they do make a tool to do it.

 

[reverm]

Haha. Just buy a cheap computer toolkit and it'll come with a chip puller. Despite the cheapness of the material they use it's actually pretty useful, especially if you're a kluz like me. :tongue:

 

[Calum]

I use a little screwdriver. Just pry at each end bit by bit and it pops right out.

 

[blairellis]

reeeealy....so how much is this new eeprom? the standard 100 buck upgrade fee?

 

[chriscar]

reeeealy....so how much is this new eeprom? the standard 100 buck upgrade fee?

Same price - but no downtime, and you *may* get it faster than waiting for them to install it for you. Per Ben @ JWT, there are some early production JWT ECU's that can't be done like this, they have to be sent in.

Just get the number off the eeprom, call them up, and they'll take care of you.

C

 

[sr20boston]

I got a replacement EEPROM last week. $100 charge. $250 core which is refunded upon return of the old core. Got it ~2 weeks after ordering it.

http://sr20.net/gallery/album121