routes to delete maf from RB20

[legit240sx]

So im wondering if their is any other way to delete the maf from a rb20 (in a 240sx s13) other then a VPC. VPCs are way cool but way old and cant find one for the rb20. Ive looked for some good threads but can't find any that help out. any suggestions?

I know you can run z32 maf but im just down to delete it and just run a air filter on the intake side.

[krayton]

blow thru maf (relocating it do different section)

or a standalone or something that can run a MAF.

blow thru would be your best route

[fast_s14]

you could always get the rb26dett power fc dejetro and wire it to work on the rb20. Its just a thought.....

[Carl H]

why do you want to ditch the maf?there are no power gains to be had doing so on a nissan.

[legit240sx]

personally im just looking into itI have a rb20dett 2.2L. I want to upgrade the fuel and air and have a piggy back sys to control it, for the air is was looking at putting two mafs on when i heard about the hks vpc and i liked the idea but the vpc is old and none that i could find for a rb20, and i was wondering if their was any other way to do it. Personally it would be cool to have and not worry about mafs and save some engine space, but im still just feeling it out

thanks ill have to check into all those

[240z4u]

Gross piggyback.

Carl up above your post will do a rom tune for you. Not sure about your combo.

You may be able to use AEM EMS to delete the maf.

No real reason to IMO.

Evan

[legit240sx]

just looked into the blow thru maf and its seems way legit, if my assumptions are right i could put a z32 maf after my fmic and extend the wires which will be cheeper and easyer then doing two mafs or going with any electronic way.

carl h seems you know a lot about this subject, is it a good idea? also i will read more into it but would the BOV mess around with the maf readings (if it was blow thru) Seems that the decrease in air or movment of it would do something to the maf.

Modified by legit240sx at 12:53 PM 10/10/2008
Modified by legit240sx at 1:00 PM 10/10/2008

[ch187]

i know someone selling this guy.



plugs straight into harness no need to splice wires or anything.this can be tuned by allot of the usual suspects as its v.easy to work with. comes with a pre loaded map, cant rememper what spec its for(im sure it was a mild tune rb20)

The LT-12 has all the features of the MT-12 - there are sixteen load points for fuel and timing from 30"Hg to 20 psi (as determined by an in-built MAP sensor). Mapping is at 500 rpm intervals, and there's adjustable acceleration and cranking enrichment, WOT adjustment, water and air temp correction. Timing is adjustable over a 45-degree range between 500 and 8000 rpm, with a two-stage adjustable rev limit. PC data logging and electronic boost control is included in the deal, as is air-conditioning control, auxiliary output switching, injector staging and a lean cruise facility.

NOTE: with a new harness this can be used on other 6 cyl and rotary vehciles

comes with:manualpc cablerb20 direct fit harnessdash displayecu£450 for the whole unit.

450 euros equals 612 bucks.

STEAL

[StricNyne]

i think u can use a greddy emanage ultimate 2 goto map sensor

[Carl H]

micro tech is eh, better to be had out there and the emanage ultimate is a joke.blowthru is the way to go if you're worried about wanting to get rid of the maf.blowthru has its own set of problems but in the end its what you want.

[legit240sx]

sweet man, yeah it would free up my engine space a bit and help me not to run twin z32 mafs and just one blow thru, we'll see how it goes and ill let you guys know, thanks alot, once i get my rb up and running ill post a thread on it the task ahead cuz i got a rebuild haha blows but ill learn all about my rb

[Coolwhip]

and help me not to run twin z32 mafs and just one blow thru

why would you be running 2 Z32 MAF's in the first place?

[fast_s14]

i believe he has a twin turbo rb20

[Carl H]

if he has a twin turbo would be easier to just make a 1 --> 2 adaptor using some pipe...even then 1 z32 maf can read approx 500hp worth of air soooooooo yeah, no need for dual z32 mafs unless you're gonna be cramming 1khp worth of air into the engine.

[Coolwhip]

i was thinking the same thing. Wasn't carlos looking to run his twin rb27 like this?

[BoostFab]

personally im just looking into itI have a rb20dett 2.2L. I want to upgrade the fuel and air and have a piggy back sys to control it, for the air is was looking at putting two mafs on when i heard about the hks vpc and i liked the idea but the vpc is old and none that i could find for a rb20, and i was wondering if their was any other way to do it. Personally it would be cool to have and not worry about mafs and save some engine space, but im still just feeling it out

thanks ill have to check into all those

rom tune it; look into nistune or bikirom. if you want to spend more, get the AEM EMS, or even MicroTech ; so many to choose from, it's just mattter of $

[legit240sx]

I had to switch around two of the exhaust manifold flanges to fit the rb20 (all of the twin setup from a RB26 just after market dump pipes, manifolds and downpipe)





and here are some pics of it in the car, ill get acouple more pics uploaded so you can see the actually turbos i just got the rb26 stock charge pipe showin.I actally did fabricate a y pipe for a single maf so i could run it once i got it in but it was blown so..

Im shootin for about 500 550 on a rebuilt rb20 2.2 (forgies and spool rods) with some other bolt ons and a whole lot of tuning. I was actually going to buy a 25 crank from mr boost fab but i thought i would just keep it simple. so with the idea of twin z32 maf is that i could not at all have to worry about any air flow issues plus it kinda made sence cuz the rb26 stock has two mafs.







but i would just rather have a filter per each turbo and run it that way, it looks sick and helps a bit and i think a blow thru z32 maf would be good

[Carl H]

except for the nasty camera shake looks pretty good.

[BoostFab]

turn on macro (close up) mode. and use flash LOL

setup looking good, but bracing the turbo will help these ebay manifold from cracking.

[StricNyne]

nice man i did tthe rips kit though !

[legit240sx]

what would be the best way to the brace?

yeah kinda did that night mode and thats what i got...

[BoostFab]

what would be the best way to the brace?

yeah kinda did that night mode and thats what i got...

weld some plates from the manifold flange to the turbo flange.

[lanerjo]

what is the benefit of a blow through design on the maf? either way it measures the air flowing through it right? the same volume of air has to be pulled as would be pushed through it..

[240_jz]

just convert it to Map, and get a ems

[legit240sx]

its just the easyest way to get the amount of air you need and for me since i got twins and i really just want filters on them and not a maf befor the turbo it would be easyer to run a blow thru, just hwta im thinkin

[legit240sx]

would rather have a blow thru

[Sil240]

What are the engine specs of your 2.2???

I'm running a 2.1 and my machinist told me not to bore it out any further because it would be thinning the cylinder walls too much.And if I wiped the motor again I would have to sleeve the block or ditch the block.

Wow thats a 5mm/.195 overbore!!!!!!!
Modified by Sil240 at 8:31 PM 11/1/2008

[HOMEMADE240SXTURBO]

check http://www.mapecu.com

I've used it on my single turbo rb20 and it works great. that's the only cheapest thing available.

[legit240sx]

so you got a 80mm bore(2mm over), i am in the prosses of the rebuilding the engine in which i havn't bored it out yet. it seems like boring it out to 82mm works for most people from what i heard and thats what im going with, tomei's 2.4 stroker kit involes a rb26 crank and rods with a 82mm piston so it seems it is a risk but from reading it works, still working it out..