WOW! I'm really impressed with this chip. I wish I had hard numbers to give you guys, but the SOTP is awesome!
I got my 98 Vert A4 in April. The car is great out of the box...but...c'mon now! So I installed B&B Bullets, a Blackwing filter, and 180 deg. stat. These alone made a big difference, but I wanted more. I took a chance and ordered the Stage 2 Jet Chip. I was a little hesitant since there is no info on this site about them. I figured, what the hell...somebody's got to try this thing out. Besides, I'm here in the East Coast in Jersey, and dyno tune centers are seemingly none existant. Also, having a 98, I don't have a lot of options with programmers anyhow.
So, I took the car out and I SWEAR it feels like I'm driving my Brother-in-laws 03 Z06! It's absolutely nuts. It tied together my mods beautifully. I can't believe how hard this car pulls now. I'm gonna have to hook up my G-Tech and see what kind of 1/4 mile times I can get.
It is possible that a professional tune would yield even better results, but for the time and money I'm glad I took the chance and got the Jet Chip. I would highly recommend trying this thing out. I don't see how there's anything to lose... except tenths!
The other great thing is that if in the future I do cam or head changes, etc... they can re-tune the chip. I hope to hear from people who try this out.
you are the first person i have heard brag on the chips....wow...i have been wanting to try one on my 97 but i have only heard negative stuff or how they dont really help ....where did you order yours? maybe its the brand....thanks
I was a little hesitant since there is no info on this site about them. I figured, what the hell...somebody's got to try this thing out. Besides, I'm here in the East Coast in Jersey, and dyno tune centers are seemingly none existant.
Glad it worked out for you, but FYI...
one of the finest tuning shops ANYWHERE is ~ 50 miles from you, in Cream Ridge -- ECS (609 752-0321).
__________________ —Bob
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Pawngod - I got it off Ebay, and it drop shipped directly from Jet Performance. Took about 2 weeks for delivery. Maybe They don't do much if you use the Stage 1, but the Stage 2 with exhaust and air mods is awesome, IMHO. I felt a HUGE difference after the chip.
Mr. Lucky - Thanks for the tip. Maybe I'll go anyway, just to put it on the dyno and see what it's got.
The chip plugs between the PCM and one of the factory wiring harnesses. In case anyone doesn't know, the PCM is underneath the battery, and is accessed through an inner fender panel.
First, I turned my wheel all the way to the left. That enabled me to get to all the inner fender and PCM access panel screws, without removing the right front wheel.
Then, I jacked up the right side using the rear-most jack point on the right side. This gave me ample room to work from underneath the car.
I removed all the inner fender and access panel screws, including a couple that are underneath. The panel just slides away out from the fender.
Just because I'm a rebel, I did all of that before removing the negative battery terminal. Nobody tells ME what to do!
Slide under, and you'll see two PCM wiring harnesses. Unscrew and remove the blue one closest to the fender. The Jet Chip comes with and extension screw. Screw that into the hole where the original harness was attached.
Then simply plug in the Jet chip, and then piggy-back the original harness into the chip and tighten the screw.
( Side note: Make sure you keep the chip and harness STRAIGHT when plugging in! I came in at a slight angle, and bent two of the little pins that insert into the harness. I straightened them out, and started over being more careful. No problem. )
The instructions said to remove the plastic cap from the wiring harness for clearance issues with the access panel. I did, but just in case, I wrapped the wires with electric tape in case of chaffing.
The panel goes right back on, and the car comes down. If you opened a beer while reading the instructions, it'll still be cold when you're done the install.
glad to hear your getting good results with the jet chip.
you installed a 180* thermostat, does the stage 2 turn the fans on eariler to take advantage of that?
there would be more gains to be had by either going to ECS and tuning on the dyno or by tuning it yourself with EFILive.
__________________ 98 Pace Car #383 SOLD! gone but not forgotten....
73 Convertible: Perpetually in the middle of a frame off resto...
I doubt the fan has been affected, since I didn't get the upgraded fan control harness (~$200?) yet. Among other things, the 180 deg. stat was recommended with the Stage 2 chip, so like a lemming I jumped off the cliff. All I know is that I met all the criteria for the chip, and this car rocks now. Best $235.00 I ever spent.
BTW, thanks for the tuning advice. This is just a stepping stone for performance for me, though. When I get deaper into mods as the years go on, I'll seek out professional tuning. The reality is that I'm years away from heads, cam, intake, headers, etc... and this will get me by for now. If I use the chip a couple of years, then it's about 32 cents a day...A good investment if you ask me.
180* thermostat does nothing for you if the fans aren't programmed to come on earlier.
and you don't need to have heads and cam to justify a professonal tune. a stock car will benefit from a professional tune, your jet chip is a small taste of that!
I am glad you mentioned that about the thermostat..you saved me from installing one...lol....so does a tune replace the chip or does both add to performance
I am glad you mentioned that about the thermostat..you saved me from installing one...lol....so does a tune replace the chip or does both add to performance
The PCM is programmable, the "chip" is an add on and not the best way to do it.
A "tune" permanently alters the factory "tune" in the PCM and is the best way to do it.
The "chip" is, in effect, a tune. It's just a "mail order" tune, that piggy backs the wiring harness. I'm actually glad I don't have a permanent tune to my PCM right now, as I am not finished with the car. Installing the chip was perfect for me. It is advertised to be used with high flow air box, high flow exhaust, and 180 deg. stat recommended. I did all those mods, and the chip made them work better. I can't say with any authority that is DOESN'T reprogram the fans. For all I know it does. What I do know, is that for $235 and a little time, my car is awesome now. A professional tune is only as good as it's tuner. I would just like to say for the record, that Jet Performance IMHO knows how to tune a car.
According to their website:
"JET Performance Products are developed at our state of the art facility in Huntington Beach, California using the latest Dynamometer Techniques and computer monitoring equipment to insure all JET chips and modules are tuned for the maximum torque and horsepower gains throughout the rpm band.
The programming changes to each JET chip are extensive and include modified spark advance tables, air fuel ratio modification, torque converter lockup (in automatics), shift improvement in electronic automatic transmission and various other parameters to optimize the torque and horsepower curve for each individual application. Chassis Dynamometer tuning allows JET to develop a specific program for each application.
Every vehicle is first tested in a stock configuration to get baseline dynamometer and track times. To do this the vehicle is connected to JET's custom data acquisition system to monitor various sensors. Engine temperature, spark advance and air/fuel ratios, all this data is then recorded and stored away for later comparison.
From there we start to modify the spark advance and fuel curve in 500 rpm increments until we achieve the maximum torque and horsepower at the drive wheels in each rpm and load range, this allows turning under all types of various driving conditions and not just wide open throttle, a decisive advantage to the JET chip!
All the Data is stored on disk and transferred to the JET chip program so thorough track and street testing can be done under "real world driving conditions" to assure the Dyno results prove out on the road in decreased 0-60 mph times and quicker ¼ miles acceleration."
The way I see it, I did buy a professional tune. Were all the tests performed on my specific car? No. But whatever they did made my car kick butt. Buy one; don't buy one; that's up to you. I bought one and wanted to tell everyone about it, since there isn't much out here about it.
Corvette Store
Installed a Stage 2 Jet Performance Chip
WOW! I'm really impressed with this chip. I wish I had hard numbers to give you guys, but the SOTP is awesome! 
a stock car will benefit from a professional tune, your jet chip is a small taste of that!
