Who knows the '07? I want to know which intake/exhaust/racetuner/dyno tune gets me the most bang for the buck rated by dollar. Meaning...if you have $500 this mod yields X HP if you have $1000 you get etc..

 

The biggest bang for the buck is the Screming Eagle air cleaner, something like 11hp.But you will need a tuner or a download to make it work.Then a good two into one exhaust will get you the most HP but slip-ons are easier to install and tune for.Again you will need a good tuner to make the whole set up work right.Don't waste your money on anything other than a PC3 or a SERT.I think you could do the AC,slip-ons, and a PC3 for right around $500 if you did the labor yourself.You could do a Thunderheader,PC3,and AC for just over a thousand maybe less if you shop around.

 

First, you'll need the SERT. Don't even try any significant mods without it. The key is in the tune, not in the parts you bolt on. The TC box that uses a wide band O2 sensor is also a good choice. Anything that eliminates the O2 sensor, IMO, is a bad choice for a daily rider.

Opening the air cleaner a bit ias important. You can buy the SE air cleaner kit for $140. Or you can modify the stock can and install a bigger filter, like K&N.

For exhaust, the best bang for the buck is slip ons. Check with S&S and Cycle Shack.

Internally, swap in a better cam, like SE204. I think Andrews also has some nice cams for this new motor.

If you live at a high altitude, consider upping the compression ratio.

 

I'd recommend going through Zanotti's or other Online HD dealer it's worth the discount , I've had very good service from them . Here's a list in order of price ( Z's) with part number

1) Stage I A/C 29440-99D $104.77
2)SE perf slip-ons 80491-07 $318
3) 103 Stage 1 kit -29903-07 Black. $ 534 ( includes cylinders/pistons/Stage I A/C)
4)SERT 32107-01F $ 357
SERT Cable 32108-06 $ 26.95

SE Cams (251,255,257,258) $211.37

 

How difficult is a cam swap?

Whiff

 

I'll play devil's advocate for a while. I did my research when in the exact same boat as wannavee. I chose to go with the PCIII for a couple of different reasons. 1) I can install it myself in a half hour. (which I did) 2) I can tweak it as I feel necessary 3) There have been more complaints of lean pops and backfiring under decel that I have heard from SERT users than PCIII users. 4) I already gave Harley enough of my money. Also, I feel that the so-called "closed-loop" fuel injection system is far from that. The loop is only closed at start-up and just off idle. Otherwise it goes into "open loop." This closed loop system on a harley is far from an automobile style fuel injection system. On a car it is constantly adjusting a/f ratio based on maf readings. The motorcycle is not doing so. For this reason I chose the PCIII. I can plug the O2 sensors and eliminate all possible chance of bad idle and low fuel just off idle. The PCIII also kicks in extra fuel at start up so that is not an issue. I am a proponent of the PCIII, not a dealer or distributor. The reason I am a proponent of it is not because I own it, it's because my bike runs great, hasn't popped or backfired once and is easily tunable and removable. The SERT would have to be installed by a dealer, involves splicing wires and I have heard negative comments of lean pops and backfiring/popping under decel. My bike is a daily rider and will always be that. In fact it's dirty more than its clean. I have never been a "bang for buck" kind of guy. I buy the best components that I can afford at the time. For this I went with PCIII, thunderheader and SE a/c kit. Also, my bike has never been "tuned" or dynoed. I told fulemoto what I was putting on the bike and then I slapped the PCIII on and away I went. I couldn't be happier with the performance of my bike.

You won't notice a seat-of-the-pants difference with any of the above-mentioned tuners. You may notice a difference if the placebo effect is in place.

Regarding the cams, on a stock motor it may not be the best option. It will just move your powerband up the rpm range. A harley generates low-end torque and cams will cause a loss of some low end torque. If you go with a big bore kit or the like, a cam will help.

Also, above was mentioned a gain of 11HP from SE a/c?! You MIGHT gain 11HP from SE a/c combined with exhaust and tune.

All of the above is opinion for the most part and just some food for thought.

 

For stock displacement and heads , the 203/204 have proved to be good choices for improving power across the range , if you couple them with an SE A/C (or =) and slip-ons.

When doing any engine mods it is important to keep a balance between components .