ORIGINAL: angusc
ORIGINAL: skendrick
I have the Gen 1 C4S and is thinking of a power upgrade.
Which one did you go for and why?
You could check out TP Racing in the USA for a turbo kit [
] Cost to import and duty works out around £9K
Power upgrade or performance upgrade? You can get conversions with high dyno numbers that just don't translate to the road (all at the top end only really useful on a track). We did what looked like a fairly modest conversion n my power kit C2S but it optimised in gear performance and n the road was a match for mot thing, bat the initial low speed/mid range shove the Turbo give you - 20 yards you just cant make up. Also how c do you want to push it - My conversion didn't boost the engine it allowed t to breath properly at al speeds then was slightly tweaked so kept its reliability and flexibility. You start plugging in after market turbos the block, pistons etc aren't designed for et and you are increasing wear and shortening the life of the car. Plus upgrades need to be balanced brakes and handling need to e improved n ne with the extra grunt (the old adage power is nothing without control).
o recommendations
1) Go on some driver training its amazing how much more performance the car has than most of us do or think the car ahs till someone shows s how to do it properly
2) Go to centre of gravity - if the handling is not quite spot on other upgrades are mostly wasted
3) Brakes first - however much you think Porsche standard stoppers are good, with minor tweak the feel, control and fade resistance can be massively improved (eg the Clutch and brakes share the same fluid, easy to oil of on Swiss passes, know, I did that - So upgrade to road race fluid that is much more predictable). The confidence this give to carry more speed into and through corners cannot be under estimated. Biggest and bet single upgrade to the beast was the brake, everyone was blown away by their feel and the topping power, yard shorter than the stock cars and ultimately on the road more than a match for GT3'ánd Turbo' on steel brakes. This gave so much confidence
4) Handling - ref Centre of gravity make sure your suspension is in tip top condition. Once the brakes are upgraded you'll probably start bending bits from late braking - so look to rose jointed suspension parts, better/more adjustable roll bar set up. PSS9' once your standard PASM has worn out. Works with PASM but massively improved handling and more adjustable.
5) Breathing - Air intake, improves performance and sound, a lot of options out there boost low to md speed power by 20-25hp.
6) Exhaust - engine breathing and noise - More expensive but improves sound and torque as well as freeing up a few more horses through ought the rev range.
7) Rolling road remap to eliminate flat spots and optimised= drivability on road - maybe only 1-2h over the remaps but does what t say on the tin. Massively improves drivability
8) Single Mass flywheel - fundamentally changes the character and driveability of the car, up to you. If you have a turbo don't it'll ruin the car.
9) Before you get to fly wheels, if you have done most of the rest, you'll need a full GT3 or Turbo braking system (cables, cooling, master salve cylinders the works) of you'll be in the first brick wall/trees from a high speed stop, especially if you haven't done the suspension properly.
Who - Porscheshop and Parr worked on mine, along with COG I'd highly recommend all three. Use a reputable trusted Porsche approved shop - if the guys make a mess its new car/engine time so you have to have a lot of trust here.
Personally - The beast was run as a project with Porcheshop with independent checking and idea's from Parr. S I cant recommend either highly enough. The intakes from Porscheshop for a Gen1 are fab, just for the noise and value
What you end up with is a sharpened CS 2/4 for the road in fact a slightly more comfortable. useable and road performing GT£ - IT now called a GTS and Porsche brought it out the year after I created mine...........Being completely honest the Beast was still lighter and faster than the GTS by a margin but less comfortable than a GTS. In the end I decided I wanted a Turbo and a friend made e an offer I could not refuse on the Beast.
IF you want to bolt on an after Market turbo - save yourself a world f grief and go buy a second and Gen 1 with 50k+ miles. It'll cost you less (money, pain, frustration) in the long term.
Hope this helps [
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I have owned a 2005 997C2S for just over a year putting about 10K miles on without problem she's now done 46K, however I hanker after a Turbo Cab, but alas cannot bring myself to part with the extra cash. I recently rang a Porsche car sales and maintenance [&o]specialist to enquire after a 997 Turbo Cab and said I would like to trade in my 997S against it. he sounded like the guy that comes to fix the washing machine. "Early 997's are a big problem, they score the bores and have failures on the camshaft bearings which just collapse" or so he told me. I have since found an article in a magazine which seems to back this up to some degree and now I am worried as he told me the resulting damage will cost £ 10K to repair.
