re Re: 2.2 I-5 Mods

["Smith, Kirby A" <kirby.a.smith@lmco.com>]

OorQue@aol.com asserted:

> for a 50% increase in hp you need to spend money.  You're either going
>  to do some *serious* engine work and get maybe in the range you want or
>  swap in a turbo motor.

Or swap in an NF or NG motor, add a K&N air filter, a free-flowing exhaust 
system and advance the ignition timing by 6-8 degrees ... stock, these
motors 
put out 130hp and 140 ft/lbs of torque and with the above mods, you should 
pick up another 15-20hp.  It's a bolt-in proposition and there's no turbo 
lag, either.  I'll bet the above can be done for less than $1500 total and
if 
you do it in stages, the original transplant shouldn't run more than 
$750-1000, less if you can find a parts car and buy it complete.
#######

I can support the idea that a better exhaust provides a few extra horses;
there was a detectable improvement in acceleration over stock with my Stebro
exhaust.

I doubt that the airflow restriction at the intake is more than a few
percent of that in the exhaust, considering the different mass flows.  The
impovement here, even with cold shielding, should be minimal.

I would be curious how you expect to change the ignition timing.  AFAIK, the
NG uses a flywheel sensor to set timing in concert with the ignition ecu.
Changing it would seem to require either an expensive mechanical revision,
or expensive software revision.  I have heard of chips claiming 10 or so
more horses.

Kirby A. Smith   New Hampshire USA
1988 90q Titanium gray, 182 kmi
1988 90q Stone gray, 187 kmi 
1988 90q Stone gray, 180 kmi - parts car
1995 S6 Pearl effect, 82 kmi