Dude! Who says that mehran has got it a shitty engine!!!
The engine code for Mehrans Engine is Suzuki F8B !
U can pretty much do mods to this engine to bring its 0-100 times in da 13-15 secs range!!!
I have installed Spitfire Iridium Plugs, High tension wires, headers, 1.75" straight piping and a free flow muffler!
And I run my car on a couple of degrees advanced ignition all da time!!!
My car does 0-100 in 13-14 secs! Lemme know If U need any help!