[Gmecm] Help me get my LT1 a new sticker

[Phillip Kuhn]

As long as the car doesn't have any modifications other than what he listed then the stock injectors are fine. If he were to have problems with the stock injectors it would only be at WOT and high RPM's, bumping the fuel pressure up a little?should be enough if that were to happen. I have converted three of my own mildly modified vehicles to run on E85 without altering anything in the fuel system. Two were L03 TBI engines and the first was a port fuel injected nissan 4 cylinder. None of the vehicles ever had?any issues with the stock injectors being inadequate?and trust me they were all ran hard. My current TBI car does have the fuel pressure set high now only because I installed a high pressure high flow fuel pump when the stock one started going out in anticipation of a port fuel injection conversion. 


From: Avery Nisbet <anisbet at gmail.com>
To: David Allen <davida1 at hiwaay.net>
Cc: pmkls1 at yahoo.com; GM-ECM <gmecm at diy-efi.org>
Sent: Friday, September 16, 2011 5:21 PM
Subject: Re: [Gmecm] Help me get my LT1 a new sticker

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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