TPI to MPFI
Thread Starter
Heel & Toe
Joined: Aug 2006
Posts: 23
Likes: 0
TPI to MPFI
how hard of a swap is it? has anyone here done it?my 91 does not have a maf sensor (if it does i have not found it) so can i remove the tpi and install one of those fancy al. intakes with a 4 bbl throttle body , put the rails on adapt the tps and go?i am new to this fi stuff so bear with me. some of you guys have said the tpi does not make big hp, and it appears the mpfi will. is this a good idea or a dream?
Racer
Joined: Jan 2004
Posts: 291
Likes: 0
From: Norton ma
Originally Posted by sweetsoul
how hard of a swap is it? has anyone here done it?my 91 does not have a maf sensor (if it does i have not found it) so can i remove the tpi and install one of those fancy al. intakes with a 4 bbl throttle body , put the rails on adapt the tps and go?i am new to this fi stuff so bear with me. some of you guys have said the tpi does not make big hp, and it appears the mpfi will. is this a good idea or a dream?
Like this?
I converted my crossfire, used megasquirt to do it.
Drifting
Joined: Dec 2005
Posts: 1,313
Likes: 2
From: High Ridge Missouri
No offense, but I've got to agree with Bogus. If you're still lookin' for the MAF sensor on your car (and no '91s do not have them) you might want to start off with something a little simpler.
Team Owner
Joined: Sep 2001
Posts: 62,160
Likes: 1,733
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
You can read my website and start learning.
And dont even think about switching out to the other type of injection, get the Miniram intake from TPiS.
And dont even think about switching out to the other type of injection, get the Miniram intake from TPiS.
Thread Starter
Heel & Toe
Joined: Aug 2006
Posts: 23
Likes: 0
i did not say i was stupid.....lol but when i changed my water pump i obviously had to take air hose off. i did not see a maf sensor. then one of my friends said a tpi had to have one, guess not.will a mini ram clear the hood? this is my first vette.i have already seen that the stealth ram will not.i feel confident in my mechanical abilities for the swap ,just a little technically behind on fuel injection and computer systems.the race cars i have fooled with the pas 15 yrs all had carbs. i do not want a carb on my vette . for street ability and dependability , fuel injection is the way to go!
Team Owner
Joined: Sep 2001
Posts: 62,160
Likes: 1,733
From: Athens AL
C7 of the Year - Unmodified Finalist 2021
C4 of Year Finalist (performance mods) 2019
MAF sensors are used on 85-89 and 94-96.
90-93 uses a MAP sensor which measures air pressure changes to monitor fuel delivery, its called a Speed Density system.
HSR is the only aftermarket intake for corvettes that doesnt clear the hood. Miniram and SuperRam both clear fine. Miniram clears with tons of room to spare.
90-93 uses a MAP sensor which measures air pressure changes to monitor fuel delivery, its called a Speed Density system.
HSR is the only aftermarket intake for corvettes that doesnt clear the hood. Miniram and SuperRam both clear fine. Miniram clears with tons of room to spare.
Team Owner
Joined: Aug 2000
Posts: 40,156
Likes: 45
From: San Pedro CA
Originally Posted by sweetsoul
i did not say i was stupid.....lol but when i changed my water pump i obviously had to take air hose off. i did not see a maf sensor. then one of my friends said a tpi had to have one, guess not.will a mini ram clear the hood? this is my first vette.i have already seen that the stealth ram will not.i feel confident in my mechanical abilities for the swap ,just a little technically behind on fuel injection and computer systems.the race cars i have fooled with the pas 15 yrs all had carbs. i do not want a carb on my vette . for street ability and dependability , fuel injection is the way to go!
From a wrench turning aspect, it's not all that hard, they are about the same, but from the theoretical/tuning aspect, forget about it... it ain't easy and it ain't pretty.
The MiniRam is the best bet, really. The SuperRam is nice, and if you are in an emissions area, the way to go, but it can be a pain in the *** to seal up (this is why I suggest used, it's cheaper and usually bugged out). The miniram is smaller, and simplier.
The upside to all of this is that you won't have to mess with tuning it much... and then, a mail order chip should suffice.
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with Bogus & Vader86.
Melting Slicks
Joined: Mar 1999
Posts: 2,535
Likes: 2
From: Rochester NY
[QUOTE=bogus]Trying to install a Megasquirt or DFI system will totally cause your brain to melt if you are a bit behind, technically, in regards to EFI theory.
100% agree. I have a friend that helped me install the Megasquirt and DFI Gen 7+ on my vette both the of these system take him about 12+ hours to get it running. So many that little BS here there and I must say, you better be good with electronic/electrical stuffs or will be at lost. Of course this is was his first time doing the install, obviously will take longer to do the install.
Bruce
100% agree. I have a friend that helped me install the Megasquirt and DFI Gen 7+ on my vette both the of these system take him about 12+ hours to get it running. So many that little BS here there and I must say, you better be good with electronic/electrical stuffs or will be at lost. Of course this is was his first time doing the install, obviously will take longer to do the install.
Bruce
Thread Starter
Heel & Toe
Joined: Aug 2006
Posts: 23
Likes: 0
thanks guys i really appriciate the info.the fi stuff is long term , but i will post on here when i do it., and the technical stuff you guys know is a great help...i saved vaders page to my favorites!
Melting Slicks
Joined: May 2001
Posts: 3,014
Likes: 18
From: Raleigh, NC
You might want to look into the LT1 intake conversion as well. Similar to the mini-ram, but cheaper.
Also, that is one good looking 91 man. I really like it, anyway I can get you to shoot some more pics to me?
joshkinzey@gmail.com
Also, that is one good looking 91 man. I really like it, anyway I can get you to shoot some more pics to me?
joshkinzey@gmail.com
