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Topic Review (Newest First)
08-24-2011 06:26 PM
jgorm
Quote:
Originally Posted by Jerry Bransford View Post
By federal (EPA) law, chips cannot change or modify any engine parameter unless the throttle is wide-open and the rpms are at or very near redline. Not exactly how many of us driver our Jeeps. It will make a minor improvment at the dragstrip, it won't make any difference around town or on the trail. Save your $$$.
Most tuners and chips are "for offroad use only" and can do whatever they want. I highly doubt there is anything from the epa that says you can legally only modify full throttle near redline. I could see them saying that you can only modify full throttle settings, but that would be at any rpms, and highly doubtful in CA. I push the gas to the floor every day. Its only got 150hp at the tire.
Quote:
Originally Posted by jaank View Post
Can you quote a source for this? As far as I know the EPA only prohibits modifying emissions equipment via chip. There are no rules regarding modifying fuel maps, timing, redline, or anything else not specifically related to emissions.
Here in Banifornia, its illegal to modify timing, or fueling, or anything inside the ecu unless you go to CARB and have it certified (for about $50,000) to get an EO#.

If you can really get 20hp out of a tune, you would surly feel it. That is a 13% increase in power. I'll find out someday by sticking my jeep on the dyno with some 91 octane and seeing what I can do with the tune. I think 20 hp is VERY optimistic, maybe 8hp, but you never know until you try.
08-24-2011 03:54 PM
neverfastenough1
Quote:
Originally Posted by tjtoday View Post
and I did!
Man, they really changed the Pa plates alot.
08-24-2011 02:47 PM
jaank
Quote:
Originally Posted by Jerry Bransford View Post
By federal (EPA) law, chips cannot change or modify any engine parameter unless the throttle is wide-open and the rpms are at or very near redline. Not exactly how many of us driver our Jeeps. It will make a minor improvment at the dragstrip, it won't make any difference around town or on the trail. Save your $$$.
Can you quote a source for this? As far as I know the EPA only prohibits modifying emissions equipment via chip. There are no rules regarding modifying fuel maps, timing, redline, or anything else not specifically related to emissions.
08-24-2011 11:05 AM
robbiecc
Quote:
Originally Posted by tjtoday View Post
and I did!
see, there's a guy that accepts his vehicles for what they are.
i remembered them from a friends in hi school(49 willy's) and driving em in the service(early 70's) and knew what to expect and accepted that. they were a blast to drv back then and they still are but they won't win any land speed records-although with improvements over the yrs, they are a little better than they were. think the 5 spd's are a dog-imagine them w/3 spds
08-24-2011 10:38 AM
tjtoday
Quote:
Originally Posted by robbiecc View Post
...................................want performance, get a vette.......

and I did!
08-24-2011 09:46 AM
robbiecc accept your jeep-it is what it is. jump in it and take a ride to the store and get some lays--little french onion dip would go nice with them.
want performance, get a vette-want a decient DD, that's good in the snow and will take you just about anywhere you want to go, keep your jeep.
08-24-2011 08:21 AM
Neil F.
Quote:
Originally Posted by Jerry Bransford View Post
By federal (EPA) law, chips cannot change or modify any engine parameter unless the throttle is wide-open and the rpms are at or very near redline. )
That is only if the part was manufacured to meet federal requirements. You can manufacture a part to do anything and most are labeled "off road use" because they do not meet regulations.
08-24-2011 07:20 AM
Dempsey
Quote:
Originally Posted by wiz View Post

IF YOU PICKED UP 20-25 RWHP IN A JEEP YOU CERTAINLY WOULD BE ABLE TO TELL THE DIFFERENCE. oops sorry for caps.
i have had several high hp cars
ranging from mustangs (had a single turbo 03 cobra making just over 1000rwhp,LS1 corvette (heads/cam/nitrous making 440rwhp on motor and 620rwhp on spray) now in a car like this chances are you wont feel an additional 20rwhp but in a vehicle that is only making ~200 at the crank 20-25rwhp is a drastic improvement. you will not see this from a chip on a 4.0!

Well sounds like everyone knows more than me. I think his question is answered but if he has any more I will let you take care of it.
08-24-2011 06:09 AM
wiz
Quote:
Originally Posted by Dempsey View Post
Now I figure a jeep might pick up 20-25 hp with a tune (tops).

IF YOU PICKED UP 20-25 RWHP IN A JEEP YOU CERTAINLY WOULD BE ABLE TO TELL THE DIFFERENCE. oops sorry for caps.
i have had several high hp cars
ranging from mustangs (had a single turbo 03 cobra making just over 1000rwhp,LS1 corvette (heads/cam/nitrous making 440rwhp on motor and 620rwhp on spray) now in a car like this chances are you wont feel an additional 20rwhp but in a vehicle that is only making ~200 at the crank 20-25rwhp is a drastic improvement. you will not see this from a chip on a 4.0!
08-23-2011 01:37 PM
Dempsey
Quote:
Originally Posted by tjtoday View Post
I can't mention names but even the best module gains about 5 hp and a little better for torque - speaking only about the 4.0 2000 to 06. Tuning with a laptop and program while sitting on a chassie dyno is much better for reaping the most for intake, exhaust, timing and fuel trim changes. I have a box load of these I tested and will be selling them at Jeff Danniels this weekend (they do have some use if you fooled with settings).
I agree 100%. I keep forgetting its a 4.0. My cj has a v8 and I wish you all had one with me. Speaking from my other love, mustangs, I am amazed at the # of guys who put a e-cam and a cold air in a fox mustang and think they got a rocket. The thing sounds "good" well until it dies after idling too long.
08-23-2011 01:32 PM
tjtoday
Quote:
Originally Posted by LeterBuck View Post
............. Even with a big diesel you would have to wonder why dealerships dont have chips standard as an add on if it's worth it. .....................
Only the Banks diesel progams (except the big Hoss) are safe parameters and don't jepardize any systems. The others are considered "for off road use" and dealers are prohibited from installing such parts.
08-23-2011 01:22 PM
tjtoday Hmm. sounds familiar


Quote:
Originally Posted by Dempsey View Post
.

Now I figure a jeep might pick up 20-25 hp with a tune (tops). Most people cant really feel that in the seat. I'd assume your jeep is stock and if it was me I'd spend the same money on a aussie front locker.

I can't mention names but even the best module gains about 5 hp and a little better for torque - speaking only about the 4.0 2000 to 06. Tuning with a laptop and program while sitting on a chassie dyno is much better for reaping the most for intake, exhaust, timing and fuel trim changes. I have a box load of these I tested and will be selling them at Jeff Danniels this weekend (they do have some use if you fooled with settings).
08-23-2011 01:08 PM
Dempsey Aftermarket chips, custom tunes and programmers all have a place in certain car scenes. I run a custom dyno tune on my '03 Mach 1 mustang. Due to fuel injection adding things such as different exhaust, intakes, cams, etc. really confuse a computer and cause it to run differently. A chip and tune will cure most of these issues and increase power. There are a lot of fast cars running around with a bunch of money spent on it that is causing harm to the engine and they aren't getting all they could out of it because it isn't tuned right. The ever rising diesel craze has a lot of people hearing about chips/tunes. Just my opinion but the right and only way to tune a mustang with aftermarket parts is a custom dyno tune. Chips run around $300 plus another $300 to $500 in dyno time. It is expensive but I look at it like this. You don't buy new tires and not get them balanced. Same goes for aftermarket goodies.

Now I figure a jeep might pick up 20-25 hp with a tune (tops). Most people cant really feel that in the seat. I'd assume your jeep is stock and if it was me I'd spend the same money on a aussie front locker.
08-23-2011 12:55 PM
alteswaldtroll Potato chips and beer is almost always the better investment

Most 'performance' mods for wranglers are a joke anyway. For MPGs skinny-pedal control is the best solution.
08-23-2011 12:53 PM
19John62 What ever you do to your ride, Please never dip into your beer money..No fun to tinker with your toy with no beer..
08-23-2011 12:32 PM
UnlimitedLJ04
Quote:
Originally Posted by LeterBuck View Post
Even with a big diesel you would have to wonder why dealerships dont have chips standard as an add on if it's worth it.
most diesels are tuned to the max from the factory, but some do get chipped....bigger heavy duty passenger/limo van chassis for example. but they usually get upgrades elsewhere as well....some manufacturers add in the margin of safety so the next model year they only need to change the tune and they gain power....like the new Ford Scorpion - the 2011 model can gain 10hp and 65ft/lb of torque from a computer reflash free of charge from the dealership.

with diesel chips you can add too much fuel and raising the EGT's too high...on the dragstrip for one pass you're ok, but towing your trailer on the highway you can melt expensive stuff.
08-23-2011 12:20 PM
LeterBuck Thanks for the info everyone I appreciate it. Hope everyone else got their answers too. Looks like the consensus is to buy some potato chips! Mmm mmm not a bad option at all. Even with a big diesel you would have to wonder why dealerships dont have chips standard as an add on if it's worth it. Either way couldn't be more content with my jeep! Time to get some fog lights to install.
08-23-2011 06:11 AM
wiz i gained over 100hp with a tuner.


oh wait...that was in my diesle f-350

save your money for a bag of chips bro!
08-22-2011 10:22 PM
tjtoday Chips for the 2.5 and 4.0 Jeeps are a waste of money (unless you think unlocking the revlimiter, speedo stop and fan controls are worth $300 plus). The best you can get out of any brand chip is a slightly better throttle response (and that will disappear quickly). Chips for GM & Ford V8s and all the truck diesels make a real measureable difference - with the truck diesels having the largest gains. I preferr having the source codes and reprograming the ecu perameters myself on a laptop. You can add headers, CAI, catbacks, port and polishing, up the fuel and change the cam but if the ecu isn't changed for those items, all you can get is a partial experiance.
08-22-2011 10:04 PM
Shelby427 Moroney, try cleaning the IAC and it's bore, plus the throttle body bore, most likely they are dirty.


LeterBuck, get the Lays. Those "performance" cold air systems, Chips, throttle body spacers, etc. are a waste of bucks on a Jeep.

If they did improve performance, then fuel economy would suffer. If they improved fuel economy, then performance would suffer. It's a Jeep, not a ricer. Like said gearing is a better option.
08-22-2011 09:18 PM
Moroney167 Past two days I have been having idling issues. Turn jeep over. Does fine... Won't start or it will and just sputters and dies. I would have to pump throttle a little thats the only way I kept it running. Pissin me off royally cause it did it once, then not again. Then again, then not when I had someone to watch and think with me. Just today I was like... HMMMM maybe... well, easy lets unplug and check. Unplugged and BANG! Fixed and drives mint no issue with that starting or idling.


Listen to all above as they told me.. buy something better. Mine is broken in a few places due to anger and in the garbage at my shop. BTW noticed nothing at all difference in drivin it or MPG. Had a Jet Performance Stage I.
08-22-2011 09:14 PM
Jerry Bransford By federal (EPA) law, chips cannot change or modify any engine parameter unless the throttle is wide-open and the rpms are at or very near redline. Not exactly how many of us driver our Jeeps. It will make a minor improvment at the dragstrip, it won't make any difference around town or on the trail. Save your $$$.
08-22-2011 09:11 PM
xloudnproud Not worth the money dont waste it... I chipped, programmed recalibrated every vehicle Ive owned my Jeep was only one you couldnt tell any difference but what do you think you are gonna get outta a brick with wheels... I went with gears after I tried the chip, gears made a noticeable difference but still no hot rod. IMO spend your 4 else where
08-22-2011 05:36 PM
nick50471
Quote:
Originally Posted by Badass_TJ
its alot more responsive,and feels like more power, it also sounds cool with the intake, its kinda got a whistle to it, as far as mpg goes i dont ever pay any attenion to that...IMO its woth the money....I also got a Borla header and full magnaflow exhaust, im sure that plays a role to
You need your butt dyno recalibrated.

To the OP:
Spend your money on mods that help. Gears, lockers,lift and tires.
08-22-2011 05:29 PM
Badass_TJ
Quote:
Originally Posted by NavySeabee56 View Post
What kinda difference we tlking?
its alot more responsive,and feels like more power, it also sounds cool with the intake, its kinda got a whistle to it, as far as mpg goes i dont ever pay any attenion to that...IMO its woth the money....I also got a Borla header and full magnaflow exhaust, im sure that plays a role to
08-22-2011 04:46 PM
neverfastenough1
Quote:
Originally Posted by LeterBuck View Post
What kind of improvements are you seeing. If it only increases fuel by a mile per gallon it will take forever to pay off. Is there any other way to improve milage on the aerodynamic nightmares. (don't get me wrong I love it and if I really cared about the mpg I would ride a bike, but... If I can spend money now and save later, who wouldn't) I don't have a huge lift or outrageously oversized tires and my fuel economy now isn't bad, but there might still be a way to save a buck.
Lol, you don't buy performance parts expecting to get your money back. For that matter, you don't buy performance parts for a Jeep Wrangler expecting to get performance, unless its a bigger engine or stroker kit. 190 hp + 20 still equals slow. Heck 290 + 20 hp still equals slow nowadays. You gotta pay to play, and its going to be more than 700 bucks! Be happy with what you have and take him offroading. See who has the advantage then.
08-22-2011 04:36 PM
LeterBuck What kind of improvements are you seeing. If it only increases fuel by a mile per gallon it will take forever to pay off. Is there any other way to improve milage on the aerodynamic nightmares. (don't get me wrong I love it and if I really cared about the mpg I would ride a bike, but... If I can spend money now and save later, who wouldn't) I don't have a huge lift or outrageously oversized tires and my fuel economy now isn't bad, but there might still be a way to save a buck.
08-22-2011 04:35 PM
XOIIIIOX I've also got friends that think they're hot s*** with their chips in their trucks but are they any good? In jeeps? Does anyone know?
08-22-2011 04:34 PM
NavySeabee56
Quote:
Originally Posted by Badass_TJ
i got this in my jeep and i could def tell a difference

Edge Trail Jammer for Jeep
What kinda difference we tlking?
08-22-2011 04:30 PM
Briangr subscribed cause ive been wonderin the samething
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