intake question

TDPhill · 11-17-2008, 03:44 PM

Hey guys I have been reading this great site for a while now and learning lots of good stuff and decided to post. Anyways i was reading KB's huge write up on the whole lly intake deal and wantet to know a few things. First of all if i remember correctly the lb7 didnt have this problem, and by the lbz it was greatly improved...i think. So my first question being is that since it sounds like that the larger the radius and size of the intake the more the turbo/egt's/economy benifit? So can/has anyone fab'ed a custom intake right from the turbo all the way to some sort of filter? I know guys who sled pull often just have a lil pipe to the turbo for minimal restriction. with some fancy SS tube and some 90 degreee bends say 4 or 5 inch round and a mig/tig could an excellent intake tube be fab'ed up?

**timespentsearching** · 11-17-2008, 04:05 PM

Quote:

Originally Posted by TDPhill

Hey guys I have been reading this great site for a while now and learning lots of good stuff and decided to post. Anyways i was reading KB's huge write up on the whole lly intake deal and wantet to know a few things. First of all if i remember correctly the lb7 didnt have this problem, and by the lbz it was greatly improved...i think. So my first question being is that since it sounds like that the larger the radius and size of the intake the more the turbo/egt's/economy benifit? So can/has anyone fab'ed a custom intake right from the turbo all the way to some sort of filter? I know guys who sled pull often just have a lil pipe to the turbo for minimal restriction. with some fancy SS tube and some 90 degreee bends say 4 or 5 inch round and a mig/tig could an excellent intake tube be fab'ed up?

yes you can do this just remember you have to mount the maf somewhere in the same diameter as it was in unless you ahve efi live then you can mount it in a bigger tube i think. it will read funny if its in a bigger tube

TDPhill · 11-17-2008, 04:07 PM

is the maf 100 percent necessary even with the use of efi? I dont know much about the maf and want to know if it can be left out somehow? If not how exactly does efi account for a diff size/volume of an intake tube?
thanks

**timespentsearching** · 11-17-2008, 04:09 PM

Quote:

Originally Posted by TDPhill

is the maf 100 percent necessary even with the use of efi? I dont know much about the maf and want to know if it can be left out somehow? If not how exactly does efi account for a diff size/volume of an intake tube?
thanks

really im not sure, this is a question for idaho rob

TDPhill · 11-17-2008, 04:19 PM

Alright thanks, i'll stay tuned if anyone else has any ideas. OH and on a sidenote, does the twin kit from mpi include a new or different intake? just wondering how he gets around the problem

**timespentsearching** · 11-17-2008, 04:22 PM

Quote:

Originally Posted by TDPhill

Alright thanks, i'll stay tuned if anyone else has any ideas. OH and on a sidenote, does the twin kit from mpi include a new or different intake? just wondering how he gets around the problem

im 99% sure it does. your putting air into a turbo that in a different spot meaning you need a different intake. idaho rob could answer this to, he runs mpi twins. im thinking of making a compound setup myself

**Hook'em_Horns!** · 11-17-2008, 05:28 PM

Quote:

Originally Posted by TDPhill

since it sounds like that the larger the radius and size of the intake the more the turbo/egt's/economy benefit?

Instead of a single sharp bend in the design of the later mouthpiece versions, the LB7 MP has two less severe bends to make the same turn, yielding better airflow with less restriction. So, even though it (LB7) is smaller in diameter than later versions, it reportedly moves more air. The larger diameter of the LBZ MP just helps to compensate for the restriction of a single bend.

Altering the MAF sensor setup requires that the sensor be re-scaled (adjusted) to function properly, EFI is a tool to utilize for this, if you know what you’re doing. Since the OEM intake is more than adequate until you reach serious levels of trickin’ the truck, it's just easier not to tinker in this area.

TDPhill · 11-17-2008, 06:22 PM

right on, thanks for clearing that up, if the mpi twins wernt so appealing and well proven it woould be worth a try on a project truck. but i think i would leave the r and d to someone who does this kida of a thing full time, i just like throwing around ideas and see how realistic they are. but as you said its still do-able.............maybe not at this moment

**TYREBOYZ_DEMAXIN** · 11-18-2008, 07:58 AM

with time and money anything is possible...my advice is find someone with wild ideas that has some experience with building ideas and open your wallet.

an aftermarket intake isn't needed untill roughly 500HP but you will notice gains before that also so if you have a few extra bucks its not a bad idea.
its not always size that helps but placement and tuning is what makes the biggest difference..

TDPhill · 11-18-2008, 08:11 AM

Quote:

Originally Posted by TYREBOYZ_DEMAXIN

with time and money anything is possible...my advice is find someone with wild ideas that has some experience with building ideas and open your wallet.

an aftermarket intake isn't needed untill roughly 500HP but you will notice gains before that also so if you have a few extra bucks its not a bad idea.
its not always size that helps but placement and tuning is what makes the biggest difference..

see thats what i was thinking. And whos to say I would get it right the first time? I find that with the projects i work on half the fun is actually building, having the part after is a bonus. And i was guessing that 500 hp was kinda the area one would be needed too. And i also agree that haing one even on less tunned truck will still be benificial......right.