how much extra power from basic mods?
 

To those of you who have dyno'd your cars: How much extra HP can one expect from the following common bolt-on mods? K27S turbo, GHL headers and free-flow muffler sans cat, aftermarket I/C (such as ANDIAL or KOKELN), 1 BAR spring, and SC cams? Never dyno'd my car, but have guesstimated extra 50 HP over stock.

Gain depends on the starting point. If your starting point is a stock Euro 3.3L engine you'll add about 100hp at the wheels. Much more if starting with an early USA or 3.0L engine.

Yep, easy cheap hp. On my 997tt, adding 100hp costs a fortune.

its not that cheap for the 930 though, around 6-8k for new quality parts as listed

Right, not cheap by honda perspective. You could turbo a Honda complete for Intercooler upgrade on a 930.

I have about the same updates on my car. Have tested with Ifhone app Dynolicious to result 470 engine horses not whp. Do not know if this is accurate, some others who have used this app.

Yep, patience is a virtue in this case. I did the same thing, took my time waiting for the 'good deals'. Things like IC's just don't wear out, brand new turbos are....well....brand new. Cams: Close inspection will tell you if you got a good deal or not. As opposed to BFN prices, used is usually a pretty economical way to go with great HP paybacks.

Those are fantastic bargains even by used standards! I watch the classifieds every day and you really got lucky or have great negotiation skill.

You just have to have an accurate all-up weight of your car.

Tecnisk data on vehicle was added.

(POLO TURBO) SHOW OFF! :p


Congrats!

U need better fuel in Cali.
A competent wrench/mechanic is key..