Personally i wouldnt put too much hope on a muffler for the 2.2 ... putting "Just a Muffler" on will make the car slower... i can say this first hand because my 93 has a 2.2 in it, and i did that... and a bunch of the 2.2 guys in the Second Gen forum yelled at me for it...
the only differences between the 99 - 02 2200s and the older 2200s (2.2s) is the head.
http://www.jbodysource.org/wiki/MultiGenEngine2point2History
Everything you ever want to know about your motor is there...
are you automatic or manual... if automatic, consider converting over to the 5 speed.... a 2.2 with the automatic trans is nearly 91 WHP... the 5 speed is closer to 105 - 115 ...(the THM 03 (3T30) (93 and older) and THM 04 (4T40) (94 and newer) automatic transes are horrible. they are also known to have their torque converter lock solenoids to go bad)
The 1.6 Roller Rocker arm swap is nice, but its nearly impossible to correctly set the lash, so you will get lifter tick out of the swap. I'm about to pull mine off my motor and go back to stockers. --- I would provide a how to for the swap, but i only have it for the 97 and older heads... Keep that in mind... ---
http://www.jbodysource.org/wiki/MultiGenEngineRollerRockers (again 97 and older How-to... use this only as a reference as what is involved... do not use this as a howto)
Depending on what level you want to take your car will depend on what to do to mod your motor.
If you want to go all out and rebuild your motor, i suggest doing a Piston Swap (there are several different types to go with if you are or are not considering forced induction), Eagle Rods, Clevite 77 Berrings, Muelling High Flow Oil Pump), Port and Polished head, Comp. Cams 1.6 Roller Rocker arms, then get you a turbo manifold, turbo, intercooler, blow off valve, injectors, and tune (do your research for all parts related to turboing)
or if you just want to go with bolt-ons or engine tricks... heres what available
go Header - OBX - More bottom End Power, or Pacesetter - More Top End Power
CAI - Cold Air Intake, several different companies make them, make sure you get a water release valve or locate the filter in a spot water cannot reach
K&N Air Filter
Relocate IAT (Intake Air Temp) Sensor (located on your rubber intake between filter and TB) to some where cold (but make sure water cannot get to it)
Comp. Cams 1.6 Roller Rockers (not quite a bolt on, its a little more involved, but still only takes an hour or so to do)
Install a glass pack resinator between the cat and the muffler if you want an aftermarket muffler so you can retain the back pressure your motor so desparately needs
get the AC Delco Rapid Fire Plugs, and 8mm Wires (i recommend Excel)
MSD Ignition... ive heard mixed reviews on this... some people say the gain, other people say the GM ignition is just a strong
Chip or Tune ECM/PCM - Superchips is one of many that can help you here
i believe RSM makes a 62 mm Throttlebody/Intake manifold set up... (if not RSM, somebody does)
Performance Pulleys - do some research, not sure if this is anymore than a cosmetic swap.
Hyper Ground / Hyper Power kits - again do research. The ground kit claims to gain 1 - 5 HP... but it is very useful to use to replace stock corroded and worn grounds
If your automatic, you can get an external Transmission fluid cooler. They dont make a kit for the car (at least they didnt 2 years ago) but you can get a universal and just cut your tranny lines going in to the radiator
200 Amp Recoiled Alternator - Find a shop that will do it... not much for performance, but will help if you want to put a system in
Optima Red/Yellow/Blue Top Battery - Again not much for performance, higher Cold Cranking Amps, will also help with a system.
Helix Spacer between the TB and the IM...
even if you dont swap the IM/TB ... you do want to take if off once a year and clean it... more than likely you'll need a new gasket when doing so...
i'm sure im forgetting some.
Your last option. Rip it out and swap
I'd recommend getting a LD9 2.4 out of (or made for) a sunfire GT (including trans and PCM/ECM) ... this would be the easist swap... there are other motors than can go in but will need a bit more work to be done...
Ecotec
Quad 4 LO (2.3)
Quad 4 HO (2.3)
3100 V6
3400 V6
3800 V6
3800 SuperCharged v6
Northstar v8 (needs a lot of modifications, but can be done)
im sure there are other motors as well... this was just a brief list...
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I highly recommend
AGAINST boosting this motor without some form of internals... the Stock 2.2 Block can only hold 4 lbs reliably
Edited 4 time(s). Last edited Monday, September 24, 2007 8:00 AM