Running Rich.... 2.8 pulley+meth > 10.9 @WOT
06-30-2008, 11:23 AM
#26
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cant you drop the rate at which the meth sprays out the nozzle? Or change the ratio of water to meth? I dont know your full setup, im trying to help avoid some hassle.
If your pulley is modular go ahead and drop it. Id like to see (if/how much) it does lean it out.
If your pulley is modular go ahead and drop it. Id like to see (if/how much) it does lean it out.
06-30-2008, 12:29 PM
#34
There is a lot of FAIL in this thread.
^^^^ is correct.
Installing a smaller pulley will NOT make you go lean until the injectors go static and can not provide any more fuel.
The computer will adjust to the increase in air and add fuel as needed.
Going from a 2.8" pulley to a 2.7" pulley on 60# injectors will NOT lean up the A/F because the injectors can handle the extra air volume created by the smaller pulley.
Going from a 3" pulley to a 2.7" pulley on Stage 2 injectors will lean up the A/F ratio because the 42.5# injectors will not be able to keep up with the extra air and will go static at the higher rmps.
This really needs to be cleared up.
Installing a smaller pulley will NOT make you go lean until the injectors go static and can not provide any more fuel.
The computer will adjust to the increase in air and add fuel as needed.
Going from a 2.8" pulley to a 2.7" pulley on 60# injectors will NOT lean up the A/F because the injectors can handle the extra air volume created by the smaller pulley.
Going from a 3" pulley to a 2.7" pulley on Stage 2 injectors will lean up the A/F ratio because the 42.5# injectors will not be able to keep up with the extra air and will go static at the higher rmps.
This really needs to be cleared up.
06-30-2008, 12:32 PM
#35
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There is a lot of FAIL in this thread.
^^^^ is correct.
Installing a smaller pulley will NOT make you go lean until the injectors go static and can not provide any more fuel.
The computer will adjust to the increase in air and add fuel as needed.
Going from a 2.8" pulley to a 2.7" pulley on 60# injectors will NOT lean up the A/F because the injectors can handle the extra air volume created by the smaller pulley.
Going from a 3" pulley to a 2.7" pulley on Stage 2 injectors will lean up the A/F ratio because the 42.5# injectors will not be able to keep up with the extra air and will go static at the higher rmps.
This really needs to be cleared up.
^^^^ is correct.
Installing a smaller pulley will NOT make you go lean until the injectors go static and can not provide any more fuel.
The computer will adjust to the increase in air and add fuel as needed.
Going from a 2.8" pulley to a 2.7" pulley on 60# injectors will NOT lean up the A/F because the injectors can handle the extra air volume created by the smaller pulley.
Going from a 3" pulley to a 2.7" pulley on Stage 2 injectors will lean up the A/F ratio because the 42.5# injectors will not be able to keep up with the extra air and will go static at the higher rmps.
This really needs to be cleared up.
100000% agreed, however im a bit more conservative about all the mis-information going on.
06-30-2008, 12:57 PM
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06-30-2008, 01:20 PM
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There is a lot of FAIL in this thread.
^^^^ is correct.
Installing a smaller pulley will NOT make you go lean until the injectors go static and can not provide any more fuel.
The computer will adjust to the increase in air and add fuel as needed.
Going from a 2.8" pulley to a 2.7" pulley on 60# injectors will NOT lean up the A/F because the injectors can handle the extra air volume created by the smaller pulley.
Going from a 3" pulley to a 2.7" pulley on Stage 2 injectors will lean up the A/F ratio because the 42.5# injectors will not be able to keep up with the extra air and will go static at the higher rmps.
This really needs to be cleared up.
^^^^ is correct.
Installing a smaller pulley will NOT make you go lean until the injectors go static and can not provide any more fuel.
The computer will adjust to the increase in air and add fuel as needed.
Going from a 2.8" pulley to a 2.7" pulley on 60# injectors will NOT lean up the A/F because the injectors can handle the extra air volume created by the smaller pulley.
Going from a 3" pulley to a 2.7" pulley on Stage 2 injectors will lean up the A/F ratio because the 42.5# injectors will not be able to keep up with the extra air and will go static at the higher rmps.
This really needs to be cleared up.
this is where u fail...car runs a 11.9 afr after tuning for meth....meth isnt accounted for by the maf so ur actual commanded is prolly around 12.4...now ur running a smaller pulley which is bringing in more air and u are commanding a 12.4 still so thats what ur car is running but yet u have added more heat which is going to lean u out and the meth at the same gph will not be able to keep up so in return that 11.9 afr that u were running on a bigger pulley is now going to be around ur commanded afr...
so please if u dont know what ur talking about dont argue with people that do
06-30-2008, 01:51 PM
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yes, i was thinking this...but changing the mixture to say a 70/30 water-meth mix would decrease my octane rating some, wouldnt it? and that wouldbnt be good for my increased timing both on and off the bottle... thoughts?
06-30-2008, 01:52 PM
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this is where u fail...car runs a 11.9 afr after tuning for meth....meth isnt accounted for by the maf so ur actual commanded is prolly around 12.4...now ur running a smaller pulley which is bringing in more air and u are commanding a 12.4 still so thats what ur car is running but yet u have added more heat which is going to lean u out and the meth at the same gph will not be able to keep up so in return that 11.9 afr that u were running on a bigger pulley is now going to be around ur commanded afr...
so please if u dont know what ur talking about dont argue with people that do
so please if u dont know what ur talking about dont argue with people that do
he is correct
n/m we are talking about "only" WOT, ignoring o2s which i wouldnt throw a perfectly good tune out to do.
either way, the safest method imo is to change the ratio of the water/meth at your level
Last edited by rrutter81; 06-30-2008 at 02:01 PM. Reason: Automerged Doublepost
06-30-2008, 02:45 PM
#47
this is where u fail...car runs a 11.9 afr after tuning for meth....meth isnt accounted for by the maf so ur actual commanded is prolly around 12.4...now ur running a smaller pulley which is bringing in more air and u are commanding a 12.4 still so thats what ur car is running but yet u have added more heat which is going to lean u out and the meth at the same gph will not be able to keep up so in return that 11.9 afr that u were running on a bigger pulley is now going to be around ur commanded afr...
so please if u dont know what ur talking about dont argue with people that do
so please if u dont know what ur talking about dont argue with people that do
I just want to make sure that people understand the difference between this setup and a non-meth injection setup. In the early posts it was not clearly stated.
I am sure that there are MANY people out there who believe that simply going to a smaller pulley will "lean out" any setup. You see it all the time in "Stage 2 Pulley?" threads.
Because when people read posts like this:
And I am not sure if I would ever recommend someone "adding heat" to their engine...
But its your call.
06-30-2008, 02:47 PM
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06-30-2008, 03:08 PM
#49
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hey raven i spoke with you months ago about a custom meth tune... remember me. well im ready now, ive got my 60's in hand! get back to me about it im ready to have a beast as well...
ohh and were can i find this video i searched the last 5 pages of his recent posts and found nothing... link?