[Gmecm] Help me get my LT1 a new sticker

[Avery Nisbet]

Your going to need 25to45% high flow rate injectors to run E85.

Just get some high flow cats and be done with it.

-Avery

On Thu, Sep 15, 2011 at 5:36 AM, David Allen <davida1 at hiwaay.net> wrote:
> See if this goes through!
> David
> ?----- Original Message -----
> ?From: pmkls1 at yahoo.com
> ?To: David Allen
> ?Sent: Thursday, September 15, 2011 9:44 AM
> ?Subject: Fw: [Gmecm] Help me get my LT1 a new sticker
>
>
> ?David,
> ?I have sent this reply to the gm ecm mailing list twice but for some
> reason it will not go through. Could you pass it on for me please ? And in
> case this does go through, E85 produces significantly less CO, NOx, and
> hydrocarbons. The reduction of these should be significant enough to negate
> the need for a catalyst to pass the test.
>
> ?Connected by DROID on Verizon Wireless
>
>
> ?-----Original message-----
>
> ? ?From: "pmkls1 at yahoo.com" <pmkls1 at yahoo.com>
> ? ?To: Ron Gregory <ron at gregoryusa.net>, gmecm at diy-efi.org
> ? ?Sent: Thu, Sep 15, 2011 01:31:40 GMT+00:00
> ? ?Subject: Re: [Gmecm] Help me get my LT1 a new sticker
>
>
> ? ?If you have access to E85 then not only will you get it to pass
> emissions testing but you will also not want to run gas in it ever again. I
> suggest that you run the car as low as possible on gas at home and fill up a
> five gallon container with E85 and then put it in the car once you have it
> as close to empty as possible. For a starter tune, take your normal tune for
> the car and increase the injector constant 30%. You will also want add a few
> degrees of timing advance across the entire table. That will get the car up
> and running and probably pretty well too. Before you begin to alter the fuel
> maps any you will need to run at least a tank of E85 through the car to
> ensure the alcohol content is as close to what is at the pump ( it is
> probably 85% there right now but it does range from 70-85% ). From there
> just watch your fuel trim values and alter the fuel map to suit. If you end
> up wanting to play with the E85 ( which I think you will ) I will give you a
> few pointers. First, you will ?need to richen up the AE and PE tables a
> little to avoid hesitation. Second, you will need to mess around with the
> ignition timing, but keep in mind that E85 likes more advance however you
> can easily hurt power by adding too much advance and not know because in
> that engine you will not experience detonation with E85 no matter how much
> advance you add. Also, you will have to add more fuel to your cold starting
> tables avoid extended cranking and bad hesitation in cooler weather ( if it
> gets into the 40's or below). With that info in hand you now know more than
> enough make the car pass emissions and make more power. Please pardon my
> grammar as I sent this from my phone.
>
> ? ?Phil
>
> ? ?Connected by DROID on Verizon Wireless
>
>
> ? ?-----Original message-----
>
> ? ? ?From: Ron Gregory <ron at gregoryusa.net>
> ? ? ?To: gmecm at diy-efi.org
> ? ? ?Sent: Wed, Sep 14, 2011 17:32:52 GMT+00:00
> ? ? ?Subject: [Gmecm] Help me get my LT1 a new sticker
>
>
> ? ? ?My son has a '95 Firebird that needs to pass the Texas IM240 dyno
> testing.
> ? ? ?The vehicle is run on a dyno at 15 mph and 25 mph while sniffing the
> ? ? ?tailpipe. The car has long-tube headers, no EGR, no air pump,
> 160-degree
> ? ? ?thermostat, and an empty cat-con.
>
> ? ? ?Last August, I played with the tune a bit, but couldn't get the car to
> pass
> ? ? ?without installing a new cat-con *and* a special tune. This year, I'd
> like
> ? ? ?to try [with your help] to pass with an empty cat-con.
>
> ? ? ?The TunerCAT .bin and .txt dump files of the tune that finally worked
> last
> ? ? ?year are here:
>
> ? ? ?http://oldpizza.net/formula/2010_08_25_austin_firebird_emissions_5.bin
> ? ? ?http://oldpizza.net/formula/2010_08_25_austin_firebird_emissions_5.txt
>
> ? ? ?I had to mess with the timing, injector constant, and finally the
> shift
> ? ? ?tables, so it would stay in 1st gear for the 15 mph reading and 2nd
> for the
> ? ? ?25 mph reading.
>
> ? ? ?The shop is really cool about it. They will actually let us install
> another
> ? ? ?PCM before we put it on the dyno, so we won't have to actually drive
> highway
> ? ? ?speeds with this tune.
>
> ? ? ?Any ideas on how to cut emissions down enough to pass "the test"?
> ? ? ?Do I have a snowball's chance in August of passing without a cat-con?
>
> ? ? ?I know where I can get some E85. Would that help?
>
> ? ? ?Ron
>
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