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First of all, wanted to thank you all for your warm welcome to the forum. We joined as sponsors about 1 year ago, although we have been on the 6speedonline sister board for quite some time and are well known with the Aston Community.
We have had a lot of success with our F-Type Lowering Springs proving very popular and appreciate the support and uptake on these as a new sponsor.
A number of people asked us for information on our pulley and tuning packages for the 5.0L and 3.0L supercharged engines. We have been quietly tuning these engines since 2010 with great results and happy clients but decided it was time to start promoting this aspect of our business more aggressively.
In addition, we were also asked about developing some more complete power upgrade packages similar to the ones we offer for Aston Martin. Earlier this year, a board member with a 2011 XF Supercharged reached out to us and offered to aid in the development process including long term testing and dyno measurement. An independent dyno operator was selected based on a reputation for consistency and reliability. We are big believers in independent dyno data wherever possible as it ensures the accuracy and eliminates any alteration or manipulation.
The testing was conducted in 3 stages:
1. Baseline Establishment
2. After fitment of manifold-back exhaust system
3. After addition of our 1.5lb pulley & ECU Tuning
Methodology: 5 runs were conducted for each of the above stages. The high and low result for each stage was eliminated, with the remaining 3 results averaged (although they were remarkably close.)
Baseline:
Run 1: 394.6 WHP
Run 2: 396.3 WHP
Run 3: 392.5 WHP Average: 394.5 WHP
Sport Cats, XPipe, Sport Mufflers:
Run 1: 420.9 WHP
Run 2: 419.0 WHP
Run 3: 421.2 WHP Average: 420.4 WHP (Gain of 25.9 WHP)
Baseline:
Run 1: 457.9 WHP
Run 2: 456.9 WHP
Run 3: 457.2 WHP Average: 457.3 WHP (Gain 36.9WHP)
Total Gain = 62.8 WHP, or 74.7 BHP at the crank.
Peak Torque was increased from 363 ft/lbs at the rear wheels, to 431ft/lbs, for a Gain of 68ft/lbs at the rear wheels, or approximately 81ft/lbs at the crank.
Perhaps the most significant gain is the wide gap in the torque curves, evident across the power band, with 95% of peak torque delivered from 3000RPM onwards, and 80% from 2000RPM. We have also successfully installed this package on an XF-R, and XF-RS with excellent feedback from happy customers!
And also with the core power producing components, but not the rear mufflers. The rear mufflers do not contribute much if anything at all to the power gains, and as all our exhaust components are interchangeable with original equipment, a more affordable option allows the retention of the stock mufflers: VelocityAP 75BHP Power Pack for Jaguar XF 5.0SC and XF-R
Some video clips are to follow - you will notice the X-Pipe includes a pair of bullet resonators, which really round out the sound nicely to eliminate drone.
Just to make sure we can pay $6,000 for 75 hp? That includes a hand held tuner, pulley and exhaust. No headers, intake or anything else?
Close, I also added K&N Filters $88, and the TCP intake set up $300. This was my documented experience. 65 RWHP added. If you can believe the Jaguar claim of 470 Crank HP, my car exhibited 19.1% drive-train loss.
Just to make sure we can pay $6,000 for 75 hp? That includes a hand held tuner, pulley and exhaust. No headers, intake or anything else?
That is the whole shooting match, 200 cell catalysts, X-Pipe (with or without resonators), rear mufflers, pulley, tune and hand held tuner. 75BHP in a box, so to speak!
Two interesting things I noticed from your dyno results:
1. Your hp and torque at 3100 rpm and lower is less with the tune and pulley than just the exhaust. Seems strange from the results I've seen from cars with pulleys, as that's usually where all the power is added. Any idea why? Maybe less back pressure?
2. Your AFR's are very rich at redline before the tune. My AFR's were a full point leaner at the very high 10's at 6500 stock. Maybe their equipment was off on this? Under 10 is really rich.
Last edited by 2010 Kyanite XFR; Oct 6, 2015 at 02:06 PM.
Two interesting things I noticed from your dyno results:
1. Your hp and torque at 3100 rpm and lower is less with the tune and pulley than just the exhaust. Seems strange from the results I've seen from cars with pulleys, as that's usually where all the power is added. Any idea why? Maybe less back pressure?
2. Your AFR's are very rich at redline before the tune. My AFR's were a full point leaner at the very high 10's at 6500 stock. Maybe their equipment was off on this? Under 10 is really rich.
1. Check out the A/F line, I think the lean they chose for the tune takes some of the TQ and HP away in that lower range, I think there is a correlation there??? I asked the tuner about it and he said this is what they want to see. (I would have thought 12 down to 11 would be the goal, but I am not a tuner) Pulls like a train in the 3500 to 5000 and I knew that before I saw the charts. X-pipe is up close to the cats on this car. I have seen one further back, another thread is going on that right now?
2. Unsure on that, from what I gathered the tuner was trying for 11 at red line and that is what we have. All the A/F lines from January, June, August, and September were very consistent.
In discussing the DynoDynamics vs the DynoJet with this operator he told me he has them both calibrated close together, he has taken cars from one to the other numerous times and they report similar results.
1. Check out the A/F line, I think the lean they chose for the tune takes some of the TQ and HP away in that lower range, I think there is a correlation there??? I asked the tuner about it and he said this is what they want to see. (I would have thought 12 down to 11 would be the goal, but I am not a tuner) Pulls like a train in the 3500 to 5000 and I knew that before I saw the charts. X-pipe is up close to the cats on this car. I have seen one further back, another thread is going on that right now?
2. Unsure on that, from what I gathered the tuner was trying for 11 at red line and that is what we have. All the A/F lines from January, June, August, and September were very consistent.
In discussing the DynoDynamics vs the DynoJet with this operator he told me he has them both calibrated close together, he has taken cars from one to the other numerous times and they report similar results.
Not sure if you've seen my dyno results (they are all posted) but that doesn't make sense to me. I made a lot more hp and torque all the way down to 2100 with tune and pulley. And you should have picked up the "free" hp and torque from XF Supercharged tune to XFR-S (with limiters removed) tune AND the extra boost of the pulley.
And typically the leaner the AFR (higher the number) makes more not less power, but detonation is the enemy then. The redline AFR at around 11 is fine to make sure things don't go boom because of the heat at that engine speed . Was just surprised your results before the tune were so rich. Haven't seen any others that rich before.
So if the dyno results should be equal, then I have a LOT more power, with less work done? And I had more power stock than you do now? Just pointing out that doesn't make sense is all. Dyno Dynamics and Mustang always seem to read MUCH lower than Dynojet. Some dyno operators do have a correction factor that approximates Dynojet, but your figures don't appear to have that applied.
Not trying to beat you up Tom, and glad you're happy. Just trying to help you see that the some of the info you've been given doesn't add up.
You guys need to get before and after drag runs or 60-130 pulls with a vbox and stop playing these dyno number games!
Wait a minute.... dyno numbers games? Sure they can be played. Lots and lots of video on that, out there. Simply moving the intake probe will gain 75 HP. I saw that video...
I simply wanted to see for myself what, if any, gains are made by the modifications that I did. Take from it what you wish. I went to the same operator four times. (after each modification) I went, not the Tuner, not the Exhaust manufacturer, I am satisfied with my results. I can hear and feel the difference, no question. Well before I did the mods I was reading many posts, mostly from back in 2011 before the tuners had or were advertising their experience in HP and TQ gains with any real data. Many claims with no real backup data posted. Well, I have my own data that I paid to have done. Again, I am more than satisfied! More and more results are being posted now. A pattern should/will emerge. And I believe a pattern is beginning to show that there is real power left in these 5.0 SC engines. Whether you want to believe it or pay for it is entirely up to you. As they say "HP cost $$".
Oh, and I will hit the strip next spring... BIR closed for the season.
Oh yeah, I wasn't saying YOU were playing games with dyno numbers! More so that different ones read different numbers, etc. I mean, we all have to (or should) get on a dyno at some point for tuning...before/after, etc. Good to see some other Jag owners doing this sort of thing like you are. I'm always game to try and get more power out of this blown 5L - I'm going to try out their Sport Cats soon and report back with any improvements.
Too bad we're not closer to each other, would be nice to get to the strip with some fellow Jaguar owners!
VelocityAP 75BHP, 81ft/lb Power Pack
