how can i make my 1996 pontiac sunfire run better and get better mpg and more...

[john g]

...hp? i have a 1996 pontiac sunfire 2.2L 4Cyl Unleaded Gas
i want
better mpg
more top speed
more hp
more torque
and it shakes really bad when its idleing but once i get on the gas its smooth

 

[gotspeed1212]

check out hyper tech they make programmers that are very user friendly
you can make it shift sooner (if its a auto) so the rpms stay lower you can take off the speed limiter and set it to a power tuning that can make 20hp alone

we have a 96 impala that is a beast now shifting in to 2nt at 55 mph leaves about 5 feet of rubber when you drive it hard
for about 300 bucks you can unlock the power thats in a motor

 

[Rat]

<---mechanic you could do the following........................ECU Chip, Gas Flowed Heads , lightend Flywheel, <---that should make it faster all of the listed to my left if all done together should relieve about35bhp ish mayb more you can try an induction kit K&N i find best that should free up the breathing. as for fuel consumtion try buying a CB26 Valve it saves on fuel and puts a swirl ov air into the inlet manifold making the fuel go into a whirlwind and thus improving combustion try reading a bit about the cb26 valve http://www.ecotekplc.com/more_cars_08.htm i would advise u buy the extra filtre to baffle the sound of the cb26 valve try sourcing one from FleaBay they fit any car and only take about ten mins 2 fit if that its dead easy also try geting some cams made up from scratch PIPER CAMS hope this has been some help

 

[Anthony M]

My Dad puts this stuff called "Z Max" you put it in your gas and oil and you get all the stuff you want, and it realy works we got 23mpg on the way up north with a chevy 1500 Z71, I dont know what to realy say but just get it, it works !! You can get it at any auto store.