got to get from 1.80 to 0.80 on the damn IL dyno test. this is what im planning

1. new cat
2. fix air injection tube for headers
3. new acell plugs
4. new O2 sensor
5. stock chip

the questions i have if if i ran the test with 93 octane with a bottle of octane boot, would the higher octane burn cleaner and this help me get pass the emmisions?


car is a 91 rs with edelbrock headers and intake, stock trans and convertor for now posi 323 rear end...

any other sugetstions??
got to get it pass soon.. got final warning...


thanks

 

ok don't let the fans kick on till 220º put the stock chip in run amaco 93 (burns VERY clean IMO)
make sure all the spark plugs are at the right gap.
cap and wires would be a good idea. try that first i bet the chip will help ALOT

 

Hey bro.....Welcome to the board!!!! We got to atleast get the stock chip back in and replace the cat / air tube....
P.S. check out my sig.


Thanks Bill:hail: :hail:

 

I don't think octane has much effect on emissions, amaco might put some bs in the 93 that may help tho. Depending on how old your current cat is, that may be the only necessary mod. Good luck.

 

He has the stock cat.

 

Ah, I assumed stock trans and converter was the torque converter.

 

Nope.... He means the catalitic canverter!!!!

 

as far as wires i good msd wires with heat sleaves. new cap at that time.. new egr valve last year when i did the intake swap

 

puttin on new good cat before next test.. yes sadly stock trans and convrtor for now..

 

the chip i used for the test the first time was a off the self jet stage 2. chip for those who are wondering.

 

I heard from someone that if you run pure alcohol in the motor it will pass. Could be though.....

 

Don't forget the basics either.

A tune up (which you're on your way to doing), set timing, new air filter, new oil, new PCV and filter.

Even a new t-stat may help just to make sure you're temp is going high enough.

 

just was thinking about new PCV and fuel filter....didnt see any open vaccum lines ... air filter is K+n will check to se how dirty it is through...

tstat is a 160 but before i took it last time i drove around unitl temp temp gauge was up to like 180.. and by the time they were doing the actual test it was like 220 so im sure that was it..

i would like to thank everyone for there tips.. hopefully by this friday i will have everything done and then time to go testing..

 

I don't have your combo at all, but a new cat is a great way to lower emissions. A change of oil will not do anything at all emissions wise. I have no EGR, but I did add a Catco high flow convertor and the A.I.R. Tubes on my headers are blocked off with water pipe ends. I just came back from getting mine tested today and my HC was 0.090 and CO was at 0.264. Both numbers are extremely low. I also have a 160 thermostat. Oxygen sensor should be replaced if you are installing a new convertor. Preferably GM. Good luck.

 

Heres my deal. Specs are in my sig. I needed to pass mass emissions, same as california.

I first went out and put a brand new 3" cat in.. Went to the inspection station and ran it. Emissions were soo high the computer kept crashing.

I added a stock thirdgen air pump, and hooked it up to the cat. I added 1 3/4 bottles of that emissions pass stuff (basically alcohol + fi cleaner). drove 6 miles, and into emissions station.. I passed better than a new honda..


HC: 00.02 limit: 02.00
CO: 000.06 limit: 030.00
NOX: 00.08 limit: 03.00
CO2: 026.00 (no limit)

-- Joe

 

Dan you heard that from me at denny's and yes you can do it.

 

No he can't. You have no idea what your talking about.

1) Alcohols stochi is 6:1, not 14.7:1 like gasoline. Thus, you'd need to more than double your injector pulse width - or if running a carburator, double your jet size.

2) Alcohol requies a cyl cranking pressure of at least 200 psi to even ignite. Thats like a 10:1 c/r engine, min.

3) Alcohol has no lubricating properties like gasoline, thus you'd need to add one to prevent failure of o-rings, fuel pump, corrosion, etc.


You never want to run much more than 20% alcohol in a gasoline engine.

-- Joe

 

its not like your going to be running it alll the time. its only for 15min during the sniffer test and thats it. there for your fine.

what i so it just turn my carb to run LEAN and i have 9.5:1 compression. works fine for me

 

hey anesthes what about running 100 octane fuel??? Is that good or bad for an engine and does it help with emissions?

 

This does nothing. in fact upping Octane when it isn't need can actually take power away. I believe 110 (leaded) Burns more oxegenated than pump gas but again if you don't need it, it won't help any.

I also know that running alchohol in a low performance motor is VERY bad. You will wash your cylinder walls down quickly, if it even runs. It also burns twice as fast as gas and yes it does burn clean but there is no way you swap gas for alchohol (100%) and just drive it to emisisons. Alchohol motors actually get started with gas being squirted into the carb to fire them and then the alcohol takes over....

 

lol i knwo that. and i have alot of mods to my 305 there for tis ok