Hi guys, im new here and i need your help.
I own a 2008 3 door Astra GTC with OPC bodykit, 1.6 l, 118 HP engine and i`ve stumbled upon some problems so i need your advice about tuning it:
1.I`ve alrady removed the stock airbox and airfilter and installed a universal K&N cone racing air filter (for engines up to 1.9l) but i`m not that satisfied with the result.I`m not sure if the engine got more power....even more im afraid that it lost some of the power..I`ve read some posts here that K&N panel filters are more recommended for my car, but i`m not sure.
So im asking ..which one of the two is best?!
2.I want to instal the Steinmetz or H&R lowering springs. It should lower the car approx.40 mm.Some mechanics advised me not to do this `cause by doing this im shortening the life of the front axle and the complete suspension system and that the ride would become ANNOYINGLY STIFF AND HARD..as if you are driving a horse chariot ..
So i`m asking..Is this true?
3.ECU reprograming. There is a guy who owns a ride like mine who didn`t change the ECU unit.He simply put the car on a lap top and re-programmed it with a special software. He claims he got more than 20-30 HP with this 350 EUR effort.
So i`m asking...Is this possible at all, and if it is..how safe it is?
Please help and
thanx in advance...
p.s. pics of my ride will be posted after the planned modifications which include some sweet Sparco or Steinmetz interior enhancments too.