Cure for drive by wire delay.

jepstr67 · Oct 28, 2009

I was talking to a friend who builds Wranglers for serious off road use. He was talking about downfalls of modern Jeeps, and the drive by wire lag came up.
He said that there is a chip made for the Wrangler that eliminates the drive by wire delay. We wondered if the same one would work, or possibly if a different one would be available for the Patriot.
It's probably not a big deal for CVT users, but it was a problem for me driving in stop and go traffic in a hilly crowded city with the 5 speed. The 2 second lag at those traffic lights on a steep hill can be murder on your nerves when traffic packs in around you. Those 2 seconds waiting to hear the engine rev up before releasing the clutch seems like 5 minutes in that situation. I never did stall it, but I had some pretty high rpm "blast offs" to avoid an embarassing stall. Part of it for me is experience. Normally I live in a city that is very flat, but the lag is still annoying. I really notice the lag difference moving from my old linkage driven carbureted vehicles that do not lag to the drive by wire Patriot that does lag.

Anybody heard of a lag reducing chip for the MKs?

UN4GTBL · Oct 28, 2009

would be awesome if it existed!

but i haven't heard of such a thing

UA_who · Oct 28, 2009

I've heard of some aftermarket chips that will "fool" the computer by adjusting the signal input that comes from the pedal.

It makes the computer think you are pressing the pedal faster. It doesn't affect what the computer thinks the pedal position is, just the rate of change of the pedal position.

Supposedly improves responsiveness.

tiptronic · Oct 28, 2009

Ididnt realise this was a problem with the 5 speed Pat ???Is this normal ?? or maybe there is a TSB out for it.

koolkatken83 · Oct 29, 2009

I was just going to make a new thread for this but read this one first, so I will post it here. JP Magazine did a write up about how to quicken the throttle response for the '07-present Wrangler. They first thought it was electronic snake oil but decided to try it out anyway. To their surprise it actually worked. They also mentioned that it was available for the Compass and Patriot. They don't have a article for this on their website yet.

Sprint Booster

albo · Oct 29, 2009

As Ken said, JP magazine just did a feature on the Sprint Booster on a JK Wrangler in their November 2009 issue. They give it a thumbs up on the Wrangler, i'd imagine it would be the same for a Pat. It would seem that it will not work on models with the CVT (per the website).

steel5blue · Oct 29, 2009

Not sure whether we're all referring to the same phenomenon, but the K&N CAI seemed to eliminate the 1st gear hesitation in my Compass 5-speed...

jepstr67 · Oct 29, 2009

koolkatken83 said:
I was just going to make a new thread for this but read this one first, so I will post it here. JP Magazine did a write up about how to quicken the throttle response for the '07-present Wrangler. They first thought it was electronic snake oil but decided to try it out anyway. To their surprise it actually worked. They also mentioned that it was available for the Compass and Patriot. They don't have a article for this on their website yet.

Sprint Booster

A little on the expensive side, but not as expensive as rolling back and hitting the car behind you! LOL Not to mention the embarrassment.

Schoat333 · Oct 29, 2009

If I had a 5 spd patriot, I would definately get this. I would hate that lag when trying to start off on a hill.

I really dont notice it anymore with the CVT tho. Its there, I've just gotten used to it. Its not worth the price on the CVT.

jepstr67 · Oct 29, 2009

I really notice it when I'm rolling down a hill in neutral and I want to match speed before I shift back into gear. Even with no load I push on the accelerator and I watch the tach.....and wait, and wait and oops! there we are up the 5 grand!

I'm going to get one of those. I'll report back on the performance.

koolkatken83 · Oct 30, 2009

I'd be very curious about your findings on this, good luck.

driver12 · Oct 30, 2009

love to get rid of the lag but i dont have the cash for that.

klingoff · Oct 30, 2009

Hmmmm interestring. I have not noticed any delay/lag with my Pat. In fact I have to watch myself because I find I can chirp the tires so easily even with ESP on.

EDIT: Mine is a 2.4L 4x2 with the CVT.

jakeb06tc · Oct 31, 2009

Dont Notice

I do not notice any lag either on my 08 4x4 FDI 5-speed.... any reason why you guys might be getting lag on your 5-speed and i am not?? I bought it used with 20,000 miles on it and everything is running great.(knock on wood)

jepstr67 · Nov 1, 2009

Well, I'm singularly unimpressed with computerized vehicles. I can't tell if it is programmed correctly and I'm powerless to do anything about it. The dealers seem to know nothing about testing the programming and care even less. That's why I decided to try the aftermarket fix. I'm sure mentioning it to a dealer would get that familiar look like a dog waking up from a nap. Dealers seem unable to distinguish between works, and works correctly.

UPKEV · Nov 1, 2009

klingoff said:
Hmmmm interestring. I have not noticed any delay/lag with my Pat. In fact I have to watch myself because I find I can chirp the tires so easily even with ESP on.

EDIT: Mine is a 2.4L 4x2 with the CVT.

Maybe it is just a manual thing, because I have not noticed any delay or lag with my pat either.

todde702 · Nov 1, 2009

Jepstr, didn't someone post up a procedure for recalibrating the pedal? I thought it was similar to resetting the change oil but you did it three times or something like that...AH! here it is: http://www.jeeppatriot.com/forum/showthread.php?t=11796&highlight=reset+tps

Give that a try first.

jepstr67 · Nov 1, 2009

todde702 said:
Jepstr, didn't someone post up a procedure for recalibrating the pedal? I thought it was similar to resetting the change oil but you did it three times or something like that...AH! here it is: http://www.jeeppatriot.com/forum/showthread.php?t=11796&highlight=reset+tps

Give that a try first.

I've done that several times over the course of 38000 miles. It doesn't seem to help the lag. It does iron out other performance or economy issues. I haven't done it lately. I will try it again. Thanks for the reminder.

DALTONSJEEP · Nov 4, 2009

WOW

thanks to all i just did the reset and WOW what a big change..i know some may think it wont work but it did for me and i have a 5 speed.

jepstr67 · Nov 11, 2009

Sprint booster works!

I received the Sprint Booster today and I got it installed tonight. Long story short, it works.

It amplifies the throttle signal so it responds sooner. If you are skeptical, search out and read some reviews. They are all positive and rightly so.

They do say it isn't for everyone. Admittedly there will be a learning curve. I'm revving way too high on starts and shifts now but that is because I'm used to the previous lag and lack of instantly available power.

I tested it out on a few hills near my house and I am very pleased. The power is right there just like my old linkage driven carbureted vehicles. It is somewhat like going from a one barrel to a 2 barrel carb with an advanced accelerator pump.

Sprint booster is a good investment.:smiley_thumbs_up:

Cure for drive by wire delay.

jepstr67

UN4GTBL

UA_who

tiptronic

koolkatken83

albo

steel5blue

jepstr67

Schoat333

jepstr67

koolkatken83

driver12

klingoff

jakeb06tc

jepstr67

UPKEV

todde702

jepstr67

DALTONSJEEP

jepstr67

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