Jwt Ecu

[andrave]

People compalin about the JWT ECU for lower boost applications because it doesn't have an agressive timing curve.I read this on zilvia:

Quote »I called JWT and they had me pull the ECU and get them the hand written # off of the chip on the daughterboard... They are checking the program to see what is on there. I'll let you guys know what the deal is. BTW there is no sticker on the ECU that says 4 bar program.. They also said the 8.5:1 compression program just sets the timing a bit more aggressively[/quote]

So what if when you ordered yours you just told em you had lower compression?

[Nathan]

I can't possibly see that as a good idea, but if you want to gamble with your motor and your money then go for it.

[andrave]

I think JWT is a bad investment for the money. I just thought it might be an easier solution for the people that keep complaining that if only the timing curves were more agressive for low boost use it would be perfect.

[Nathan]

I think the JWT ecu is a very good option for those looking for between 3-500 horsepower without doing a great deal of tuning. It beats the S-AFC option once you get near 300hp, same with the hacked MAF. The msd btm is nice to help those two options out but you start getting near the 500 dollar JWT ecu at that point and the JWT ecu is easier to use and more idiot proof (good for people like me). I guess I can see how your idea would work, seems to risky to me though.

[voddka]

There is one other option though for about the same price which appears to be far more efficient in power production, and I'm about to try it out in a month, give or take. I'll post on the forums after its done.

[silviamaniac]

I think the JWT ecu is worth the money.

We downloaded the JWT ROM from a SE-R ecu, although we are not sure if we downloaded it correctly, but what i can say is, they do whatever they state they will. Yes the chip is 10bucks that you can get from the market, but the program isnt that simple as someone might think.

One of the feature that other couldnt take out from the ECU is the "tip in retard" and "speed limit". And it is "plug & play" too.

eManage does remove speed limit, but with all the harnesses and software, it even more expensive to hav the JWT ROM. eManage tend to serve those who really know what they are doing. JWT is for idiot like me :P

As an example, JWT can tell your injectors to pump certain amount of fuel on specific psi. With rising rate fuel regulator, you only go by ratio.

And, I do not hav a JWT ROM yet.

[d240t2]

Don't forget the extra cost of tuning with any fuel system but JWT or a rising rate regulator (which can only safely support ~7psi/220rwhp).

Dennis

[klattr1]

Quote »So what if when you ordered yours you just told em you had lower compression? [/quote] I was running into this problem after i blew my 8.5:1 compression ratio motor and i thought i was going to swap out for stock ka's from then on.Well, it would work fine for all lower boost levels, but as soon as you start boostin higher, it will get a little more risky compared to the stock compression program from Jim Wolf.I am interested to see if it would make a difference at let's say 10 psi(8.5:1 compression ratio Jim Wolf ecu program which has more aggressive timing vs. stock compression program).I think it would be great to test out. Most turbo ka people with stock compression ratio jwt ecu program generally dont boost higher than 12 psi. There are some exceptions, but generally speaking i get this feeling. So it could be a good investment.

[andrave]

I didn't mean to get a JWT versus other methods thread started here, lord knows there have been plenty of them, and each system does have its merits. Something that I must stress is that if you aren't going with a pretuned system like JWT, don't smack your turbo kit on, get excited, and go rip off a 1/4 pass immediatly without checking your air/fuel ratios on a dyno. I know 4 or 5 people first hand that have done this and immedialty "fried the piston rings" to quote fast and furious.

[klattr1]

I didn't mean to get a JWT versus other methods thread started here, lord knows there have been plenty of them, and each system does have its merits. Something that I must stress is that if you aren't going with a pretuned system like JWT, don't smack your turbo kit on, get excited, and go rip off a 1/4 pass immediatly without checking your air/fuel ratios on a dyno. I know 4 or 5 people first hand that have done this and immedialty "fried the piston rings" to quote fast and furious.

dynoing is key with any type of fuel system. Pretuned or not.

[Nathan]

Hey Andrave, you should have linked to the FA thread that you came up with this idea in I stumbled across it and after reading it I see your point, it might very well be a viable way to get a little bit more agressive timing map in place. It's still to risky for me, but it seems that they do ONLY change the timing depending on the compression ratio.

[klattr1]

they dont program more advanced timing maps so people dont call up complaining that its Jim Wolf's fault that they just blew their motor. They got to play with safety.

[Nathan]

This is certainly true...and that's why I wouldn't do it, I like my motor in one piece

[andrave]

I think its likely that it would give you more power, especially if you ran higher octane fuel, safely.But JWT is probably gonna program theirs so that you could run bad gas and still be ok.I'd guess you would have to call them.