DIY Modification to Improve Performance and Fuel Economy of AJ16 and AJ6 Engines
The following 2 users liked this post by Rhett:
XJ-Executive (09-10-2016),
XJRengineer (03-05-2015)
#342
The following 2 users liked this post by Scarecrow:
XJ-Executive (09-10-2016),
XJRengineer (03-05-2015)
#344
I've had mine on now for a few months now. Coupled with the Home Depot/Autotozone custom intake, I am up from mid 16's in MPG to just about 20 MPG according to the computer. I keep tires at 38 psi. When the computer dips down in MPG I check tire pressure and usually that gets me right back where I need to be.
The following users liked this post:
XJ-Executive (09-10-2016)
#346
The following users liked this post:
XJ-Executive (09-10-2016)
#347
Mina Gallery is the only one I know of that sells one specific for the x300 but they are over priced for what it is. I would rather buy a k&n universal pod filter and the elbow piping from an autoparts store. Will save you about $60-$70 honestly.
The following users liked this post:
XJ-Executive (09-10-2016)
#348
I did my own as simply as possible for my X300 3.2
I just removed the air box and put a K&N directly onto the end of the AFM. YEs, it could be directed more forward in behind the lights, but at 50-60 mph I suspect it makes little difference in a 3.2
In a supercharged XJR, with blower heat on the intake side, that could be a different story
I am not sure the oiled K&N actually filters much, apart from large grit and small birds, unless one fastidiously oils it very frequently.
I just removed the air box and put a K&N directly onto the end of the AFM. YEs, it could be directed more forward in behind the lights, but at 50-60 mph I suspect it makes little difference in a 3.2
In a supercharged XJR, with blower heat on the intake side, that could be a different story
I am not sure the oiled K&N actually filters much, apart from large grit and small birds, unless one fastidiously oils it very frequently.
The following users liked this post:
XJ-Executive (09-10-2016)
#349
Bracket fitted and car fired up again, took twenty minutes.
Being a normally aspirated car, access is very good. The only injury sustained was a small cut on the back of my right hand from a sharp edge on the fan housing....
If only all Jag jobs were this easy!!!
I did notice that my drive belts are looking pretty tired, so they are the next items on the shopping list....
Off out for a road test now
Being a normally aspirated car, access is very good. The only injury sustained was a small cut on the back of my right hand from a sharp edge on the fan housing....
If only all Jag jobs were this easy!!!
I did notice that my drive belts are looking pretty tired, so they are the next items on the shopping list....
Off out for a road test now
The following 2 users liked this post by rowland:
XJ-Executive (09-10-2016),
XJRengineer (03-05-2015)
#350
Having taken my 3.2 X300 Executive for a 25 mile test run this afternoon, I can report that I am very pleased with XJRengineer / Andy's modified CPS bracket.
Part throttle response in particular is very much stronger, it feels like my engine has gained a few extra ccs....
The car feels much more leisurely to drive as a result. Just what the 3.2 lump needed....
Thanks very much Andy
Part throttle response in particular is very much stronger, it feels like my engine has gained a few extra ccs....
The car feels much more leisurely to drive as a result. Just what the 3.2 lump needed....
Thanks very much Andy
The following 2 users liked this post by rowland:
XJ-Executive (09-10-2016),
XJRengineer (03-05-2015)
#351
The following 2 users liked this post by Ryan 2 jags:
XJ-Executive (09-10-2016),
XJRengineer (03-05-2015)
#352
For those of you not getting the relatively dramatic results from the Andy's bracket, mya I suggest checking and possibly replacing your spark plugs. This makes a HUGE difference. I've found the Champion RC12YC (or whatever they are called) work great but only last 5K miles or so. I just replaced mine again and the throttle response, crispnessm etc. are just great.
The following 3 users liked this post by SD96XJ6L:
#353
I fitted some new plugs today to hopefully cure an occasional miss at tickover - tried the Champion EON2 (Champion list them for the 3.2) - I will report how they feel re throttle response etc. once I've put a few miles on them.
The old plugs (no idea when they were last replaced) had a brick-red coloured insulator (additives in unleaded I believe) And a couple of my coils have cracks on the casing :-/
The old plugs (no idea when they were last replaced) had a brick-red coloured insulator (additives in unleaded I believe) And a couple of my coils have cracks on the casing :-/
#354
The following 4 users liked this post by XJRengineer:
#355
Dear All,
Half the current batch have gone now, so if anyone still wants one then please email helenstodart@gmail.com for more details. Thanks for your continued support.
Half the current batch have gone now, so if anyone still wants one then please email helenstodart@gmail.com for more details. Thanks for your continued support.
The following users liked this post:
XJ-Executive (09-10-2016)
#356
Have an extra "Andy Bracket" for sale!
Humorously, I was replacing my SC belt and pulleys today, and decided to install the "Andy Bracket" I bought last year. But when I took the SC belt tensioner off..... sitting there gleaming was an "Andy Bracket". Someone had already installed one!!
I guess the previous owner took that initiative but didn't mention it when I bought the car Pretty funny.
The crank sensor looks pretty new too, with clean shiny plastic, so I may have gotten a freebie there too. So good news all around.
So I now have an extra bracket I don't need, new in the bag from Andy, never installed.
I'm in the USA, so if any USA owners want one I'll just charge what I paid for it, and shipping in continental USA will be free. I'll print out Andy's instructions as well and put in the package.
Would be nice to have this go to a fellow forum member than eBay.
Just drop me a PM if interested.
.
I guess the previous owner took that initiative but didn't mention it when I bought the car Pretty funny.
The crank sensor looks pretty new too, with clean shiny plastic, so I may have gotten a freebie there too. So good news all around.
So I now have an extra bracket I don't need, new in the bag from Andy, never installed.
I'm in the USA, so if any USA owners want one I'll just charge what I paid for it, and shipping in continental USA will be free. I'll print out Andy's instructions as well and put in the package.
Would be nice to have this go to a fellow forum member than eBay.
Just drop me a PM if interested.
.
#357
Regarding fuel economy, I've put a few miles on now and on motorway journeys at (ahem) "cruising speeds" I used to get just over 24mpg, now I can get 27mpg and that includes a bit of "spirited" driving in the mix.
Not a bad improvement.
I'll be getting another of these brackets if I succumb to temptation and get an XJR
Not a bad improvement.
I'll be getting another of these brackets if I succumb to temptation and get an XJR
The following users liked this post:
XJ-Executive (09-10-2016)
#358
Hi all, I've just read the entire thread and I'm impressed with all the reviews.
I'm still waiting to get my 96 back from $2k+ of smog related repairs (O2 sensors, cats, air intake bellows, coils blah blah frickin blah).
I'm planning on adding Andy's bracket to hopefully recoup some gas mileage (or satisy my lead-booted tendencies) to make myself feel better
One question for those of us under the watchful gaze of the California smog *****: Has anyone experienced any issue passing smog by diddling the timing like this? Not that it would be a huge deal to swap in the original CPS bracket once every 2 years, just wondering.
Also CA smog related: is there a potential problem passing the visual inspection with an after-market air filter installed?
I'm still waiting to get my 96 back from $2k+ of smog related repairs (O2 sensors, cats, air intake bellows, coils blah blah frickin blah).
I'm planning on adding Andy's bracket to hopefully recoup some gas mileage (or satisy my lead-booted tendencies) to make myself feel better
One question for those of us under the watchful gaze of the California smog *****: Has anyone experienced any issue passing smog by diddling the timing like this? Not that it would be a huge deal to swap in the original CPS bracket once every 2 years, just wondering.
Also CA smog related: is there a potential problem passing the visual inspection with an after-market air filter installed?
The following users liked this post:
XJ-Executive (09-10-2016)
#359
Our X300 just passed smog in northern California with the advance timing bracket installed. I have not noticed an increase in gas mileage and my wife drives it the same as she did before. When I drive it, I'm a bit lead footed, so my time behind the wheel doesn't count when evaluating the mileage.
#360
The following users liked this post:
XJ-Executive (09-10-2016)