I AM interested in a detailed writeup showing what had to be modified to fit the 5 with a 3 kit.
Then again, I was going to pursue making all my own parts and then tuning with an AEM FIC.
I'll get some detailed pics of anything that anyone wants to see. The only items that were different to the 3 with a manual trans is really limited to the following. Following the installation instruction for the 3, the deviations are in the following order. Reference the 3 install manual located at
http://tripointengineering.com/images/turbokitmanual.pdf
1) Step 16 in the guide - If you have a manual transmission, follow this procedure. If you have an automatic the look for the shifter cable in the same area. Disconnect the plastic retainer from the bracket and roll the cable to the underside of the bracket and reattach.
2) Step 17 in guide advises to remove the lower rear torque mount. Do not. Support the engine from beneath with a wooden block and a floor jack. Disconnect and remove the upper front engine mount (top passenger side). Ease the motor down with the jack as far as you can making sure not to pull or stretch any hoses or wiring. Don't drop the motor out of the car or let it roll into the radiator either. The motor will drop and roll forward giving you the room you need to get the exhaust out. The cowl in the 5 comes forward further than the 3 and this is necessary. This would probably be an easier option for the 3 also.
3) Step 18 - The bracket in this step was a little different but there. Just get it out of the way and route the hoses there to give room for the intake tube. You have room to shuffle them around.
4) Step 22 - Fuel injector modification. No need to cut wires. Tripoint is now putting harness adapters in the kit. Just plug them up and go.
5) Step 27 to about 31 - Cody at Tripoint will send you the appropriate wiring for you model. Just use a good ohm meter to make sure you have the correct circuit before splicing in. Take your time and it'll fire right up the first time.
6) Step 32 - Just a tip. The turbo doesn't come installed on the manifold. Use a marker or touch up paint to mark the compressor housing index. Remove the compressor housing and be careful not to bang up or damage the compressor wheel. Take off the oil feed line also for that extra room to work. Taking the housing off gives you the room you need for that last bolt to mount the turbo to the manifold. Get the oil line back on before mounting in the car.
7) When you get near step 43 and start intercooler piping and istallation you'll need to make two little tweaks here. If you have an automatic car you have to give the transmission dipstick tube a firm and intentional yet careful shove rearward and to the right. Try not to break it off but you HAVE to have an extra 1 to 1.5 inch clearance on it. In stock location the dipstick tube comes up right in front of the turbo inlet. Your alternate option is to order a universal transmission dipstick tube from Summit or Jegs and use it. They usually have flexible shafts and can be routed anywhere you wish. There is a chance that a dipstick tube from a 4cyl Mazda6 or Ford Fusion may be bent in a way that is ideal for this install but haven't checked it out yet. Just bend the tube. 5 seconds and done....
8) The other tweak is to the 3" silicone elbow used to connect the turbo inlet to the inlet pipe to the air filter. Cut about 1" off the end of the elbow that mounts on the turbo side. This will get the pipe a little closer and help clear the transmission dipstick tube the rest of the way. Now when installed the dipstick tube will lightly press on the outer radius of the dipstick tube. It will cause no issues at this point and you can get the intercooler tubing connected.
9) One of the final steps points out where to tap for vacuum on the manifold. This location may or may not be there. There should be two vacuum lines to the left of the indicated location. Just cut and tee into one of them then connect to the FIC and bypass valve as shown.
As mentioned at this point it seems the only issue left it to dial in the tune. I found that the factory MAF tube has a 2.45" ID. The turbo inlet pipe where the MAF is now mounted has a 3" ID so the difference in pipe diameter is throwing the airspeed across the MAF off and giving the MAF out of range error. I'm going to have the pipe dimpled at the MAF to get the cross sectional area the same as the OEM MAF tube before I start tuning and see if it brings the MAF range back into scale. I'm traveling now and will not even be able to look at the car again until about the 8th or 9th.