1. Chip installed
2. K&N installed
3. Flowmasters installed

Feels like a new car. So pleased with my upgrades.

 

Well now perhaps some details on that chip are in order

 

Chip? Details on that, and perhaps your cat too please.

 

Inquirey minds want to know.

 

Flowmaster details please. 40s or 50s? Ditch the middle plumbing?

 

Come on subcook30, ya can't just make a post with wild claims and not provide details..

 

I thought all modern cars had computers that you used a PROGRAMMER to make the car run better, no CHIPS anymore!?!?!?!?!?

 

The consensus is that the "chips" for the XK8 are snake water, that's why I'd like some details on what the OP did. The XK8 can not be programmed for better performance at least not without spending close to 1K.

 

Lol snake oil. But yes all hype. I've searched high and low and the most we can see is a gain of maybe 20 HP. I'll never feel it. That with exhaust,intake and an expensive remap if that even works.
Now,and I've posted this many times, rear gear change for us six speed guys would be amazing. That would be the best bang for the buck.

 

Maybe he's too busy trying to figure out how to turn off all the dash light errors without admitting it might be the bogus performance chip that is the problem.

 

I don't understand why anyone would pay for a remap or chip without a before and after dyno.

 

My MPG has increased as the vehicle's fuel trim has been optimized. Very pleased with the immediate response of improved throttle control, resulting in a sportier experience. Exhaust work+K&N+Chip= HP Increase of approximately 25 HP. Now well into the 300 club.

 

I call BS.

 

I don't call BS. He might be experiencing the new exhaust sound and the louder intake sound which makes it seem faster. MPG might go up a bit if he keeps his foot out of it. Now the chip I call BS. Remap I'm still no sure about.

 

Subcook30, thanks for checking back in, please provide more details so we all can understand and benefit from your mods.

Exhaust, what did you do? Remove anything or just replace the rear cans with Flowmasters? Which flowmaster did you use?

The chip has us all courious as this has been the subject of great debate. What chip did you get, link please to the manufacture. Where and how does it install, any codes generated, etc?

The K&N I's fairly straight forward but an installed pic would be nice.

Not asking you to prove anything just interested in what you did and the results..

Also some details about your car would be nice, year, mileage, etc.

Come on, details, we need details

 

Good Morning All,


So the filter is the high performance drop-in filter from K&N. The chip I purchased is from JDM which plugs into the ODB female connector. I've set the chip to maximum performance mode. The exhaust work consists of high flow cats, removed set of mufflers and flowmasters (40s) in the rear. The growl at take off from a stop is nothing short symphonic, commanding the attention of those in nearby vicinity.

 

I cant believe that JDM get away with selling that in the US, do you guys have any "Trades description laws".


It is one expensive flashing LED.

 

Some people believe all the hype about chips and programmers.

 

Well now subcook30, thanks for the info however this is starting to get a little like pulling teeth to get more info

You say removed set of mufflers.....did you remove the center box, pre-axle resonators and the rear mufflers or a combination of these?
What year is your cat and is it a XK8 or XKR? How many miles on that beast.

Have you tried unplugging the chip and see if there is any difference with just the intake and exhaust mods vs the chip and intake and exhaust mods? This comparison would be nice to know.

Thanks for your time...

 

Look my goal by joining this forum was to share in the enthusiasm shared by fellow Jaguar owners. I'm unsure as to where the negativity derives from but the results I'm experiencing with the upgrades installed are real. I'm just excited to share with all those on this forum. I love my 97 XK8 and am proud to be among what I feel to be a privileged owner. My car turns more heads than anything else at the lights and while driving, makes me feel good inside.