speed density
02-07-2008, 07:54 PM
#43
5th Gear Member
Join Date: Jul 2004
Location: Westminster, MD
Posts: 4,343
RE: speed density
While speed density is great for a mild motor I've upgraded from speed density to mass air and let me say I wish I did it a long time ago. I had a car that made decent power and ran good on speed density but idle was always all over the place. Just being able to pull up to a light and not have the car surge with maf and actually hear the lope is worth the swap alone.
02-07-2008, 09:49 PM
#44
6th Gear Member
Join Date: May 2006
Location: earleville md
Posts: 10,357
RE: speed density
im curious as to why yours wouldnt idle, as you know(or i think u know, lol) i have the same set up you used to have... as far as heads/cam... and mine idles great... maybe its the comp or some ****
02-07-2008, 11:06 PM
#45
6th Gear Member
Join Date: Apr 2007
Location: California
Posts: 10,468
RE: speed density
FAST's XFI can be programmed to run on alpha-n at and below a preset rpm, so no idle issues. I'm not sure if Megasquirt does that as well, Adder would know. Holley's kits are setup to run on alpha-n at low rpm as well iirc.
02-08-2008, 10:45 PM
#47
D.R. THE PATHETIC DORK
Join Date: Jun 2007
Location: West Virginia
Posts: 30,863
RE: speed density
ORIGINAL: stangbanger87
oh i agree with carburation being a better source of building hp . i am plnning on building a strocker 427 someday lol and i planned on going carb , i have nothing againist carb , if you know what you are working with you can make great power .
oh i agree with carburation being a better source of building hp . i am plnning on building a strocker 427 someday lol and i planned on going carb , i have nothing againist carb , if you know what you are working with you can make great power .
02-08-2008, 11:03 PM
#49
D.R. THE PATHETIC DORK
Join Date: Jun 2007
Location: West Virginia
Posts: 30,863
RE: speed density
Like I said!!!! CARB FTW!!!!!!!!!!!!!.........aLTHOUGH soon I may be selling the 92 and 66.......just to much overhead on both the other two!!! hurts the pocket book...besides I want a Convertible gt from 89-92 and it must be a 5 speed originally.. no aod!!![:'(].....I'm seriouslly thinking of doing it soon.........I 've wanted another vert since I had to sell my 86 5 years ago!!! yes I had a SD STANG TOO!! a 86 vert to be exact!!! awsome car... dirt slow though[:@]
.. some 16 year ole punk bought it!!!
.........aLTHOUGH soon I may be selling the 92 and 66.......just to much overhead on both the other two!!! hurts the pocket book...besides I want a Convertible gt from 89-92 and it must be a 5 speed originally.. no aod!!![:'(].....I'm seriouslly thinking of doing it soon.........I 've wanted another vert since I had to sell my 86 5 years ago!!! yes I had a SD STANG TOO!! a 86 vert to be exact!!! awsome car... dirt slow though[:@].. some 16 year ole punk bought it!!!
02-09-2008, 11:42 AM
#50
3rd Gear Member
Thread Starter
Join Date: Dec 2007
Location: buckeyelake ,ohio
Posts: 652
RE: speed density
well mjr the conversion was done to the car before we bought it the engine and tr5ans and ecu are out of a 1990 gt that is in the 88 now ,we know the maf is funky in it for one ,that was the point i was trying to get tho, there is that extra sensor that you don't have to wrry about on an sd ,and yes there is a ppower lose when you look at the stock base lines and see a 20 hp lose with the maf as oposed to sd .so in my world 20 hp more means more speed but i could be wrong . the main reason we are converting back is that he wants it to be as close to stock as possible . i don't know why your 86 vert was dirt slow it must have had another issue cause my stock sd is pretty quick now .