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Posted: Wed Mar 05, 2008 10:21 pm
by wrxSIN
mm i dont believe i have any of that. although i might be running rich w/ the AP OTS stg2 map. also, this morning when i started my car, it was like 45-50 degrees outside. but anyways, i started my car and went to put stuff in my trunk and i noticed that like i could see the exhaust gases. kinda looks like what you would usually see on a cold day.is that normal on a catless d/p and when first starting the car in the mornings?
Posted: Thu Mar 06, 2008 12:57 am
by zaxrex
What you are seeing is water vapor. The more of that you see, the less unburnt hydrocarbons you have.
That in of itself is not an accurate "tuning method", but you sure as hell can smell unburnt gases from running rich.
You really need a wideband O2 to see when you are rich and lean.
Posted: Thu Mar 06, 2008 12:47 pm
by wrxSIN
zaxrex wrote:What you are seeing is water vapor. The more of that you see, the less unburnt hydrocarbons you have.
That in of itself is not an accurate "tuning method", but you sure as hell can smell unburnt gases from running rich.
You really need a wideband O2 to see when you are rich and lean.
So dont worry about the gases i see in the morning. and i think im gonna stick with the OTS map for a while. I know that in order to get real AFR readings, i need a real wideband sensor.
Posted: Thu Mar 06, 2008 1:06 pm
by Bluestreak2006
If you on an AP OTS map you should be fine. The run abit rich but are known to be safer than other tunes. My rex is catless and if its reasonably cool out the same happens visually. But I can always smell abit of unburnt fuel.
Posted: Thu Mar 06, 2008 1:11 pm
by wrxSIN
Yeh im in stg2 OTS 93 octane. maybe i should get a cold air intake and lean out the AFR!
Posted: Thu Mar 06, 2008 2:42 pm
by GaToR
wrxSIN wrote:Yeh im in stg2 OTS 93 octane. maybe i should get a cold air intake and lean out the AFR!
The K&N Typhoon short-ram intake comes with a pretty good heat shield, despite not being a true 'cold-air' intake.
The difference between the two really comes down to personal preference.
Posted: Thu Mar 06, 2008 3:17 pm
by drwrx
The only intakes I would recommend w/o a tune are the K&N Typhoon (which has been proven to make +10whp and +12 lb.ft) and the SPT which makes a bit less. Both come with heat sheilds and neither affect the MAF sensor.
Posted: Thu Mar 06, 2008 5:01 pm
by wrxSIN
the intake was a joke =P i dont plan on getting an intake any time soon.