Originally Posted by firethebone
I have surfed this board for few days now attempting to educate myself in the area of potentially increasing the current 215 hp in a 2004 XF, and I am impressed with the quality and quantity of posts addressing this issue.
1) is it realistic to at least add/increase an additional 20 hps? lots of debates and brain-storming this issue (almost as if it is a theory).
2) when referring to performance upgrades by Kleemann, Renntech, Powerchip, Evosports, what is the cross reference info to match the motor in the crossfire with the M-B motors they cater to? Upgrading crossfires is not mentioned in their web sites.
3) is there a solid / proven combination of products that can seriously improve the current stock performance of these cars without having to advertise one of my kidneys in the black market? exhaust system, chip? no turbos or superchargers. Something tangible! not just the "it feels better than before with that new chip"!
Firstly, I would drop the name EVOSPORT out of your vocabulary completely and forget you even heard of them.
Yes it is realistic. 20 hp is an easy and relatively inexpensive goal to achieve.
First thing you have to realize is that myself and another member "Woody" seem to be the only ones who have verifiable dyno's performed on the Crossfire, albeit with the RPM limitation of the car. I would recommend you take a look at the figures from both dynos on this thread
https://www.crossfireforum.org/forum...ad.php?t=11180. Both cars are 6 spd '04 with appx. 20k miles. There could be variances between the two dynos due to temperature differences and equipment used, I would estimate +/- 3 hp would get a good thumb nail.
Woody's engine is completely stock and showing a peak whp of 156.2, while mine is modified (as best my bank account will allow), and showing 184.5 whp.
This is a clear 28.3 hp increase over stock.
Because I did not do an initial stock dyno, nor did I perform one after each modification, I cannot isolate which mod is responsible for the most / least hp gains. All I can say is that gross hp gains of 28.3 whp +/- 3 whp were achieved by installing the following items.
1) PowerChip Gold 93
2) Custom Dual CAI
3) Custom Dual Exhaust
Based on my research, my next modifications are going to be installing Schrick Cams (+7-9 hp and better torque) and having a set of custom headers built (+5-7 hp). Also adding the MegaSquirt (7th) injector system that Woody is developing. (if he ever has the time to get it done).
Good luck on your project...