ECU - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

icer · 10-23-2001, 05:31 PM

I'm interested in a ECU upgrade and i have two questions.

1) Anyone make them other than JWT?
2) Would they send a new one or do they reprogram your?

any replies will be appretiated

NJ
'91 240sx SE

ZeroGS14 · 10-23-2001, 07:29 PM

well a lot of companies do ecu's for sr20det's but I'm assuming that you have a ka motor...so jwt does and so does Jun...but Jun actually requires your car because they dyno the car as they are tunning it....so being from NJ I don't see that as an option...besides JWT is the shit when it comes to nissan tuning

icer · 10-23-2001, 07:42 PM

Alright man thanks. Now just gotta get some money.

icer · 10-23-2001, 07:46 PM

One more question about how hard is it to install one?

ZeroGS14 · 10-23-2001, 07:55 PM

easy as ####...with a jwt..all u do is take out your ecu unplug it and plug in the new ecu

S13Grl · 10-23-2001, 07:57 PM

Also, if you want them to upgrade yours, you gotta send it in to them. If you want them to send you a new one and you give them yours, it's an extra $500 deposit.

ZeroGS14 · 10-23-2001, 08:03 PM

yup..lol but jwt is only down the street from me =D

BlankFlip · 10-23-2001, 08:48 PM

extra $500! i don't want to have to wait around n not be able to drive my car while i wait for them to send me my ecu back.  r there ne sites where u can buy it, then as soon as u get it, just send them urs from ur car?

misnomer · 10-23-2001, 09:43 PM

Bank: that's a deposit, you get it back once they get your ECU.

BlankFlip · 10-23-2001, 09:47 PM

"deposit," keyword i missed there, guess i read it 2 fast n just posted, oh well, makes sense now.

BlankFlip · 10-23-2001, 09:57 PM

i just checked the jwt site, n it says that they only make them for 89-95 240SX's, have they not updated their site? seems like i've seen it for my car somewhere else. does nebody have a 96 w/ a jwt ecu upgrade?

*DSC* · 10-23-2001, 10:01 PM

Also when you swap ECUs be sure to unplug your battery <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'>

FastNissan · 10-23-2001, 10:13 PM

Check out http://www.haltech.com.au
I don't know how much they cost (probably expensive) but Duy from Texas with the 10.83 1/4 recomended these.

matic 240sx · 10-23-2001, 10:38 PM

i know JET makes them for imports... anyone know if they make one for 240sx?

konkman · 10-23-2001, 11:16 PM

I know that stillen and superchips make pretty good chips for the 240's.

But does anyone know how much it is just for the chip, not including the deposit?

ZeroGS14 · 10-24-2001, 04:44 AM

don't bother with the chips....and they do ecu'
s for the 96-98's as well

rabbit23 · 10-24-2001, 07:38 AM

JWT told me they could get the computer back in a hurry like mailing it back the day after they get it. so down time would be minimal.

jd90240sx · 10-24-2001, 07:42 AM

Hey if you really want to get a good ecu go out and get a G-Force ECU, I think that they are the absolute best ECU to get and its allot cheaper than the JWT.

Freak Leash 240 · 10-24-2001, 08:37 AM

JWT doesn't "really" do 97-98 ECU's, they just send you a 95-96 ECU. The 97-98 ECU is ODBII, it's not reprogrammable... well at least they haven't broken the code yet, but it's actually an advantage to use the 95-96 ECU, you can get rid of the second O2 sensor. I think the connecting harness is different, but if they don't send you one, a junkyard would be a great place to get one, actually you can get a whole ECU so you can still drive your car while JWT sends you the new one

*drifterx* · 10-24-2001, 09:13 AM

i went and got an extra ECU yesterday because when i eventually do mine i wanna keep my stock just incase the modified one dont pass emmissions.

IceTekGuy · 10-24-2001, 10:31 AM

while on the topic of ecu's...
since i have my sr motor (now, actually in the car)
what the #### do i do?
do i HAVE to send out my old ecu to have it reprogrammed?
or can i somehow use the one that they sent me with my motor...? help please!!!!!!!!!

*drifterx* · 10-24-2001, 11:27 AM

hmm then u r in trouble dude......
the one that came with the engine is suppost to be used..... call them up and ask them.. maybe u can leave them a deposit

konkman · 10-24-2001, 11:47 AM

Unless you've done everything else, cams, intake, exhaust, headers, pulleys etc.  I wouldn't get an ecu, the performance factors a good, but maybe not so much for the money.

But if your going turbo it will be a must.

S13Grl · 10-24-2001, 12:11 PM

Your car wouldn't run normally (and you'd notice it) if you still had your stock KA24DE ECU in with an SR20DET.  And I'm almost sure that JWT will not upgrade an ECU to be used with an SR20DET motor, but will only upgrade the KA ECU to be used with either everything stock or a NOS system.

*ca18guy* · 10-24-2001, 12:49 PM

</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote </td></tr><tr><td id="QUOTE">Quote: from IceTekGuy on 10:31 am on Oct. 24, 2001
while on the topic of ecu's...
since i have my sr motor (now, actually in the car)
what the #### do i do?
do i HAVE to send out my old ecu to have it reprogrammed? or can i somehow use the one that they sent me with my motor...? help please!!!!!!!!!
</td></tr></table><span id='postcolor'>

You have to use the ECU that came with the SR,  your old KA ecu won't work. I'm sure JWT could upgraded the SR ECU but you'd be better off buying an upgraded one from Japan. Here is a page with ECU upgrades, pretty much it looks like you only need the fuel cutter to get over 18 psi, and you need the chip upgrade to go over 300 HP http://web.norrisdesigns.com/product_overview.asp?ccode=21&id=2

*drifterx* · 10-24-2001, 02:43 PM

how much will a ECU help wiht just exhuast, headers and intake?

icer · 10-24-2001, 03:02 PM

Does it matter if i have and automatic, like will it have the same effect?

S13Grl · 10-24-2001, 04:04 PM

I really don't know about figures with an automatic. I know that they are about a 15% hp gain, or something like that. Not sure, don't quote me!

ZeroGS14 · 10-24-2001, 08:20 PM

actually jwt does reprogram ka ecu's for sr20det engines...also you can use your ka wiring harness, but in so doing so you lose the direct fire ignition that is on the sr20det....they convert the sr20 to run on a distibutor...

IceTekGuy · 10-24-2001, 10:00 PM

so i can use the ecu that came with the sr motor? without problems?

cause it did come with the sr ecu, but i was just thinkin  it might not work, some one mentioned that to me... my mechanic says it might not have to be, ... he can reprogram it himself but then i would need the numbers, or the program to upload into it....

please the more info the better....!!!!!!!!
THANK YOU ALL

10-23-2001, 05:31 PM	#1
icer Zilvia Member Join Date: Oct 2001 Posts: 171 Trader Rating: (0) Feedback Score: 0 reviews	I'm interested in a ECU upgrade and i have two questions. 1) Anyone make them other than JWT? 2) Would they send a new one or do they reprogram your? any replies will be appretiated NJ '91 240sx SE

10-23-2001, 07:29 PM	#2
ZeroGS14 Zilvia Member Join Date: Oct 2001 Posts: 181 Trader Rating: (0) Feedback Score: 0 reviews	well a lot of companies do ecu's for sr20det's but I'm assuming that you have a ka motor...so jwt does and so does Jun...but Jun actually requires your car because they dyno the car as they are tunning it....so being from NJ I don't see that as an option...besides JWT is the shit when it comes to nissan tuning

10-23-2001, 07:42 PM	#3
icer Zilvia Member Join Date: Oct 2001 Posts: 171 Trader Rating: (0) Feedback Score: 0 reviews	Alright man thanks. Now just gotta get some money.

10-23-2001, 07:46 PM	#4
icer Zilvia Member Join Date: Oct 2001 Posts: 171 Trader Rating: (0) Feedback Score: 0 reviews	One more question about how hard is it to install one?

10-23-2001, 07:55 PM	#5
ZeroGS14 Zilvia Member Join Date: Oct 2001 Posts: 181 Trader Rating: (0) Feedback Score: 0 reviews	easy as ####...with a jwt..all u do is take out your ecu unplug it and plug in the new ecu

10-23-2001, 07:57 PM	#6
S13Grl Married to the Mob Join Date: Dec 2000 Age: 44 Posts: 3,670 Trader Rating: (0) Feedback Score: 0 reviews	Also, if you want them to upgrade yours, you gotta send it in to them. If you want them to send you a new one and you give them yours, it's an extra $500 deposit.

10-23-2001, 08:03 PM	#7
ZeroGS14 Zilvia Member Join Date: Oct 2001 Posts: 181 Trader Rating: (0) Feedback Score: 0 reviews	yup..lol but jwt is only down the street from me =D

10-23-2001, 08:48 PM	#8
BlankFlip Nissanaholic! Join Date: Oct 2001 Location: The Future Posts: 1,627 Trader Rating: (0) Feedback Score: 0 reviews	extra $500! i don't want to have to wait around n not be able to drive my car while i wait for them to send me my ecu back.  r there ne sites where u can buy it, then as soon as u get it, just send them urs from ur car?

10-23-2001, 09:43 PM	#9
misnomer Nissanaholic! Join Date: Jul 2001 Location: Nevada Posts: 2,293 Trader Rating: (0) Feedback Score: 0 reviews	Bank: that's a deposit, you get it back once they get your ECU.

10-23-2001, 09:47 PM	#10
BlankFlip Nissanaholic! Join Date: Oct 2001 Location: The Future Posts: 1,627 Trader Rating: (0) Feedback Score: 0 reviews	"deposit," keyword i missed there, guess i read it 2 fast n just posted, oh well, makes sense now.

10-23-2001, 09:57 PM	#11
BlankFlip Nissanaholic! Join Date: Oct 2001 Location: The Future Posts: 1,627 Trader Rating: (0) Feedback Score: 0 reviews	i just checked the jwt site, n it says that they only make them for 89-95 240SX's, have they not updated their site? seems like i've seen it for my car somewhere else. does nebody have a 96 w/ a jwt ecu upgrade?

10-23-2001, 10:01 PM	#12
DSC New Title Join Date: Aug 2001 Location: VA Posts: 3,454 Trader Rating: (0) Feedback Score: 0 reviews	Also when you swap ECUs be sure to unplug your battery <img src="http://www.zilvia.net/f/iB_html/non-cgi/emoticons/smile.gif" border="0" valign="absmiddle" alt=':)'>

10-23-2001, 10:13 PM	#13
FastNissan Zilvia Member Join Date: Jun 2001 Posts: 208 Trader Rating: (0) Feedback Score: 0 reviews	Check out http://www.haltech.com.au I don't know how much they cost (probably expensive) but Duy from Texas with the 10.83 1/4 recomended these.

10-23-2001, 10:38 PM	#14
matic 240sx Join Date: Jul 2001 Location: las vegas Age: 42 Posts: 798 Trader Rating: (0) Rides Gallery: matic 240sx Feedback Score: 0 reviews	i know JET makes them for imports... anyone know if they make one for 240sx?

10-23-2001, 11:16 PM	#15
konkman Zilvia Junkie Join Date: Aug 2001 Posts: 534 Trader Rating: (0) Feedback Score: 0 reviews	I know that stillen and superchips make pretty good chips for the 240's. But does anyone know how much it is just for the chip, not including the deposit?

10-24-2001, 04:44 AM	#16
ZeroGS14 Zilvia Member Join Date: Oct 2001 Posts: 181 Trader Rating: (0) Feedback Score: 0 reviews	don't bother with the chips....and they do ecu' s for the 96-98's as well

10-24-2001, 07:38 AM	#17
rabbit23 Zilvia Member Join Date: Jun 2001 Posts: 252 Trader Rating: (0) Feedback Score: 0 reviews	JWT told me they could get the computer back in a hurry like mailing it back the day after they get it. so down time would be minimal.

10-24-2001, 07:42 AM	#18
jd90240sx Leaky Injector Join Date: Oct 2001 Posts: 105 Trader Rating: (0) Feedback Score: 0 reviews	Hey if you really want to get a good ecu go out and get a G-Force ECU, I think that they are the absolute best ECU to get and its allot cheaper than the JWT.

10-24-2001, 08:37 AM	#19
Freak Leash 240 Leaky Injector Join Date: Sep 2001 Posts: 134 Trader Rating: (0) Feedback Score: 0 reviews	JWT doesn't "really" do 97-98 ECU's, they just send you a 95-96 ECU. The 97-98 ECU is ODBII, it's not reprogrammable... well at least they haven't broken the code yet, but it's actually an advantage to use the 95-96 ECU, you can get rid of the second O2 sensor. I think the connecting harness is different, but if they don't send you one, a junkyard would be a great place to get one, actually you can get a whole ECU so you can still drive your car while JWT sends you the new one

10-24-2001, 09:13 AM	#20
drifterx Premium Member Join Date: May 2001 Location: boston, ma Age: 44 Posts: 1,533 Trader Rating: (0) Feedback Score: 0 reviews	i went and got an extra ECU yesterday because when i eventually do mine i wanna keep my stock just incase the modified one dont pass emmissions.

10-24-2001, 10:31 AM	#21
IceTekGuy Zilvia Junkie Join Date: Sep 2001 Posts: 362 Trader Rating: (0) Feedback Score: 0 reviews	while on the topic of ecu's... since i have my sr motor (now, actually in the car) what the #### do i do? do i HAVE to send out my old ecu to have it reprogrammed? or can i somehow use the one that they sent me with my motor...? help please!!!!!!!!!

10-24-2001, 11:27 AM	#22
drifterx Premium Member Join Date: May 2001 Location: boston, ma Age: 44 Posts: 1,533 Trader Rating: (0) Feedback Score: 0 reviews	hmm then u r in trouble dude...... the one that came with the engine is suppost to be used..... call them up and ask them.. maybe u can leave them a deposit

10-24-2001, 11:47 AM	#23
konkman Zilvia Junkie Join Date: Aug 2001 Posts: 534 Trader Rating: (0) Feedback Score: 0 reviews	Unless you've done everything else, cams, intake, exhaust, headers, pulleys etc.  I wouldn't get an ecu, the performance factors a good, but maybe not so much for the money. But if your going turbo it will be a must.

10-24-2001, 12:11 PM	#24
S13Grl Married to the Mob Join Date: Dec 2000 Age: 44 Posts: 3,670 Trader Rating: (0) Feedback Score: 0 reviews	Your car wouldn't run normally (and you'd notice it) if you still had your stock KA24DE ECU in with an SR20DET.  And I'm almost sure that JWT will not upgrade an ECU to be used with an SR20DET motor, but will only upgrade the KA ECU to be used with either everything stock or a NOS system.

10-24-2001, 12:49 PM	#25
ca18guy Premium Member Join Date: Jul 2001 Location: Clearwater FL Age: 42 Posts: 3,226 Trader Rating: (0) Rides Gallery: ca18guy Feedback Score: 0 reviews	</span><table border="0" align="center" width="95%" cellpadding="3" cellspacing="1"><tr><td>Quote </td></tr><tr><td id="QUOTE">Quote: from IceTekGuy on 10:31 am on Oct. 24, 2001 while on the topic of ecu's... since i have my sr motor (now, actually in the car) what the #### do i do? do i HAVE to send out my old ecu to have it reprogrammed? or can i somehow use the one that they sent me with my motor...? help please!!!!!!!!! </td></tr></table><span id='postcolor'> You have to use the ECU that came with the SR,  your old KA ecu won't work. I'm sure JWT could upgraded the SR ECU but you'd be better off buying an upgraded one from Japan. Here is a page with ECU upgrades, pretty much it looks like you only need the fuel cutter to get over 18 psi, and you need the chip upgrade to go over 300 HP http://web.norrisdesigns.com/product_overview.asp?ccode=21&id=2

10-24-2001, 02:43 PM	#26
drifterx Premium Member Join Date: May 2001 Location: boston, ma Age: 44 Posts: 1,533 Trader Rating: (0) Feedback Score: 0 reviews	how much will a ECU help wiht just exhuast, headers and intake?

10-24-2001, 03:02 PM	#27
icer Zilvia Member Join Date: Oct 2001 Posts: 171 Trader Rating: (0) Feedback Score: 0 reviews	Does it matter if i have and automatic, like will it have the same effect?

10-24-2001, 04:04 PM	#28
S13Grl Married to the Mob Join Date: Dec 2000 Age: 44 Posts: 3,670 Trader Rating: (0) Feedback Score: 0 reviews	I really don't know about figures with an automatic. I know that they are about a 15% hp gain, or something like that. Not sure, don't quote me!

10-24-2001, 08:20 PM	#29
ZeroGS14 Zilvia Member Join Date: Oct 2001 Posts: 181 Trader Rating: (0) Feedback Score: 0 reviews	actually jwt does reprogram ka ecu's for sr20det engines...also you can use your ka wiring harness, but in so doing so you lose the direct fire ignition that is on the sr20det....they convert the sr20 to run on a distibutor...

10-24-2001, 10:00 PM	#30
IceTekGuy Zilvia Junkie Join Date: Sep 2001 Posts: 362 Trader Rating: (0) Feedback Score: 0 reviews	so i can use the ecu that came with the sr motor? without problems? cause it did come with the sr ecu, but i was just thinkin  it might not work, some one mentioned that to me... my mechanic says it might not have to be, ... he can reprogram it himself but then i would need the numbers, or the program to upload into it.... please the more info the better....!!!!!!!! THANK YOU ALL