C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

E85.....how does it affect emissions?

Thread Tools
 
Search this Thread
 
Old Dec 19, 2020 | 04:55 PM
  #1  
cv67's Avatar
cv67
Thread Starter
Team Owner
15 Year Member
 
Joined: Oct 2004
Posts: 81,241
Likes: 3,062
From: altered state
St. Jude Donor '05
Default E85.....how does it affect emissions?

JoeNovas post on turbos got me thinking....

In SoCal they are practically wanting our old cars to burn cleaner than new. Mine baaaarely passed (88 stock)

Really want to build a bigger motor when funds allow...if it burned that clean it could allow for more cam possibly?
Would the sniffer be able to tell? Being as so many cars run on it would it toss a red flag?
Reply
Old Dec 19, 2020 | 11:58 PM
  #2  
JoeNova's Avatar
JoeNova
Burning Brakes
Conversation Starter
All Eyes On Me
Liked
 
Joined: Sep 2016
Posts: 1,133
Likes: 319
From: Ohio
Default

It depends on the E85. There's a lot of flexibility in the regulations depending on where you're located.
The dirtiest E85 in CA is considered 17% cleaner than gasoline, and the cleanest 64% cleaner.

I've heard its not legal to convert to E85 in California, but I don't know for sure.
I also know someone who converted to E85 specifically to pass the smog test (which it did).
Reply
Old Dec 20, 2020 | 08:29 AM
  #3  
84 4+3's Avatar
84 4+3
Le Mans Master
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Aug 2017
Posts: 6,928
Likes: 1,486
From: New Jersey
Default

Originally Posted by JoeNova
It depends on the E85. There's a lot of flexibility in the regulations depending on where you're located.
The dirtiest E85 in CA is considered 17% cleaner than gasoline, and the cleanest 64% cleaner.

I've heard its not legal to convert to E85 in California, but I don't know for sure.
I also know someone who converted to E85 specifically to pass the smog test (which it did).
If you do it, all parts need CARB stamps just like anything else... otherwise you are fine. That's what I know about it.
Reply
Old Dec 20, 2020 | 12:12 PM
  #4  
cv67's Avatar
cv67
Thread Starter
Team Owner
15 Year Member
 
Joined: Oct 2004
Posts: 81,241
Likes: 3,062
From: altered state
St. Jude Donor '05
Default

How would they know? Ill ask the smog guy around the corner this could possibly work.
Reply
Old Dec 20, 2020 | 02:35 PM
  #5  
84 4+3's Avatar
84 4+3
Le Mans Master
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Aug 2017
Posts: 6,928
Likes: 1,486
From: New Jersey
Default

Originally Posted by cv67
How would they know? Ill ask the smog guy around the corner this could possibly work.
If it visibly looks different they'll want a CARB sticker... if it's injectors and fuel line... probably not. Make it look to pass like you would normally mod a car and it'll be good. The visual on the exhaust is tricky from what I've been told... but idk if you have plans on modding that much. And MPGs will be comparably **** poor... it burns more efficient per gallon but needs more to get the same power... weird science. You'll fill up more... thats about it. Depending on the sniffer though you could get screwed because burning alcohol creates different pollutants altogether. Worth looking into for sure though.
Reply
Old Dec 20, 2020 | 02:47 PM
  #6  
cv67's Avatar
cv67
Thread Starter
Team Owner
15 Year Member
 
Joined: Oct 2004
Posts: 81,241
Likes: 3,062
From: altered state
St. Jude Donor '05
Default

Wont hurt to ask I suppose...You can run a catback, but the cat and 02 sensor themselves have to be in their original spot. Cat has to have a Ca EO# stamped on it also, they do check.
My truck failed as the EO number on the replacement cats was replaced by another. So it was legal, then not. Just another way for mfrs to sell parts.
Bummer was there wasnt anything wrong wtih the factory cats, I didnt know any better at the time. Guy had them sold to a recycler before the new ones were put on.
Its one big scam
Reply
Old Dec 20, 2020 | 02:54 PM
  #7  
84 4+3's Avatar
84 4+3
Le Mans Master
Liked
Loved
Community Favorite
Top Answer: 1
 
Joined: Aug 2017
Posts: 6,928
Likes: 1,486
From: New Jersey
Default

Originally Posted by cv67
Wont hurt to ask I suppose...You can run a catback, but the cat and 02 sensor themselves have to be in their original spot. Cat has to have a Ca EO# stamped on it also, they do check.
My truck failed as the EO number on the replacement cats was replaced by another. So it was legal, then not. Just another way for mfrs to sell parts.
Bummer was there wasnt anything wrong wtih the factory cats, I didnt know any better at the time. Guy had them sold to a recycler before the new ones were put on.
Its one big scam
Trust me. I know lol
Reply
Old Dec 20, 2020 | 02:58 PM
  #8  
aklim's Avatar
aklim
Team Owner
Active Streak: 60 Days
Community Builder
Liked
Loved
 
Joined: Jul 2004
Posts: 28,332
Likes: 3,246
From: Hartford WI
Default

Short of leaving the land of nuts and fruits, is there a different county you can register the car in? For example, I know of people who register their car in the neighboring county because it doesn't do emissions testing? IDK if it is all over or just that way in where you live but that is a way
Reply
Corvette Stories

The Best of Corvette for Corvette Enthusiasts

story-0

5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

 Michael S. Palmer
story-1

2027 Corvette vs The World: Every Model vs Closest Competitor

 Joe Kucinski
story-2

10 Most Common Corvette Problems of the Last 20 Years!

 Joe Kucinski
story-3

5 MOST and 5 LEAST Popular Corvette Model Years in History!

 Joe Kucinski
story-4

2027 Corvette Buyer's Guide: Everything You Need to Know!

 Joe Kucinski
story-5

10 Things C8 Corvette Owners Hate (But Won't Tell You)

 Joe Kucinski
story-6

10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

 Brett Foote
story-7

Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

 Joe Kucinski
story-8

Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

 Michael S. Palmer
story-9

5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

 Joe Kucinski
Old Dec 20, 2020 | 03:37 PM
  #9  
cv67's Avatar
cv67
Thread Starter
Team Owner
15 Year Member
 
Joined: Oct 2004
Posts: 81,241
Likes: 3,062
From: altered state
St. Jude Donor '05
Default

I was told DMV wants your actual residence they wont take po boxes anymore.
It may not be a realistic idea at all as I dont know what all is involved in using a different fuel just wondering.
Guys run propane and pass so? It would only be for smog day...not concerned about mpg

Some guys say they add all kinds of stuff to their tank, I dont know if its something they read or not
Their machine can tell if youve done that and will fail you from what I have heard. Trying to find "a guy who will pass you" is a pain and have no interest in that game

Last edited by cv67; Dec 20, 2020 at 03:40 PM.
Reply
Old Dec 20, 2020 | 04:06 PM
  #10  
aklim's Avatar
aklim
Team Owner
Active Streak: 60 Days
Community Builder
Liked
Loved
 
Joined: Jul 2004
Posts: 28,332
Likes: 3,246
From: Hartford WI
Default

Does it need to be verified? IOW, does that mean he has to know that you are residing there? Say I have a friend who lives in the next county and use his address as my DMV registered address?
Reply
Old Dec 22, 2020 | 12:40 PM
  #11  
93 ragtop's Avatar
93 ragtop
Le Mans Master
25 Year Member
Conversation Starter
All Eyes On Me
Liked
 
Joined: Apr 2000
Posts: 5,713
Likes: 105
From: Manassas VA
Default

  1. To the OP. In short, the Alcohol reduces the hydro carbons.
Reply
Old Dec 26, 2020 | 05:52 PM
  #12  
auburn2's Avatar
auburn2
Pro
All Eyes On Me
Liked
Loved
Community Favorite
 
Joined: Jun 2018
Posts: 532
Likes: 104
Default

My recommendation is to wait until you actually fail, then try to fix/fool it.
Reply

Get notified of new replies

To E85.....how does it affect emissions?





All times are GMT -4. The time now is 01:33 PM.

story-0
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-1
2027 Corvette vs The World: Every Model vs Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-20 17:58:41


VIEW MORE
story-2
10 Most Common Corvette Problems of the Last 20 Years!

Slideshow: 10 major Corvette problems from the last 20 years.

By Joe Kucinski | 2026-04-14 16:37:05


VIEW MORE
story-3
5 MOST and 5 LEAST Popular Corvette Model Years in History!

Slideshow: 5 most and least popular Corvette model years.

By Joe Kucinski | 2026-04-08 13:25:01


VIEW MORE
story-4
2027 Corvette Buyer's Guide: Everything You Need to Know!

Slideshow: 2027 Corvette buyer's guide

By Joe Kucinski | 2026-04-17 16:41:08


VIEW MORE
story-5
10 Things C8 Corvette Owners Hate (But Won't Tell You)

Slideshow: 10 things C8 Corvette owners hate, but won't tell you.

By Joe Kucinski | 2026-04-01 18:36:07


VIEW MORE
story-6
10 Best Corvettes Coming to Barrett-Jackson Palm Beach 2026!

Slideshow: Should you add one of these incredible Corvettes to your garage?

By Brett Foote | 2026-04-01 18:14:05


VIEW MORE
story-7
Every Corvette Grand Sport Explained! (C2, C4, C6, C7, & C8)

Slideshow: Every Corvette Grand Sport explained

By Joe Kucinski | 2026-03-26 07:13:44


VIEW MORE
story-8
Grand Sport & Grand Sport X Launch Alongside All-New 535hp LS6 V8!

Slideshow: Breaking down the 2027 Grand Sport, Grand Sport X, Stingray, and LS6 V8.

By Michael S. Palmer | 2026-03-26 13:48:45


VIEW MORE
story-9
5 Reasons Bad Drivers Crash & 5 Ways to Avoid a Costly Mistake!

Slideshow: 5 reasons bad drivers crash sports cars & 5 ways to avoid a costly shame!

By Joe Kucinski | 2026-03-25 16:32:55


VIEW MORE