Jump to content
SAU Community

Blow through MAF

drunken0elf
 Share

Recommended Posts

drunken0elf Collaborator

drunken0elf

Posted
Posted

Blow through MAF

My R32 GTR smells aweful everytime I change gears (exhaust smell in the cabin). So I Phone up a reputable skyline tuner and he said it's because of my aftermarket bov. (I read a lot on r32 before so he confirmed what I thought)

He recommends going blow through MAF and then tuning or finding oem piping and oem bov.

I want to get a tune anyways, so should I try to find the oem stuff somewhere or go with the blowthrough set up?

[My car is pretty darn stockish apart from HKS green pod thing intakes, what looks like a 3'' full exhaust and a 20 something year old tune from japan with the stock ECU]

check out my newbie intro tread if you wanna see what it looks like ;)

 

Cheers!

Link to comment
https://www.sau.com.au/forums/topic/471068-blow-through-maf/
Share on other sites
Hadouken Grand Master

Hadouken

Posted
Posted

Lol.

So you have a atmo bov atm.

What you want is to plumb it back in.

You don't need to go stock. But stock is good.

I don't think it's your bov causing the fuel smell in the cabin.

Unless it's running so rich that the fuel is jumping out the exhaust and into your window while driving.

  • Like 1
djvoodoo Experienced

djvoodoo

Posted
Posted (edited)

Wow. just wow...

If a "reputable Skyline tuner" says blow through MAF, i'd take a guess and say it's not so reputable lol...

English aside.... My guess is they mean "tune using a Map based ECU" so you don't need AFM's.

You do realize on a RB26 the BOV's (yes, there are 2) are under the front right hand guard/bumper. I doubt anyone's changed them. Does is go pshhhh, or sound like the Fast n Furious

Exhaust in cabin (not fuel smell) could be a leaky exhaust or gasket, aging rubber seals letting fumes into cabin.. or is it a burnt oil smell?

 

Edited by djvoodoo
drunken0elf Collaborator

drunken0elf

Posted
  • Author
Posted (edited)

The way he calls it is blowthrough as a term lol. Since he tried explaining it to me and i wasn't  exactly catching along whate he was saying he just said call it blowthrough maf. It's probably me not understanding stuff since this is all new to me lol. And the guy speaks french so yeah, he might not have the best english terminology either.

 

The bov are HKS and vents to atmosphere. (Goes pshhhh)

 

Now what the told me is that what he would do if I brought him the car, is move the AFM or maf or whatever the real terms is (the air meter captors things). He'd move them towards the front so that I can keep the stock ecu. That way it would avoid the factory setup that thinks the air is going to recirculate back into the system and compensates with more fuel even though there is no extra air because of the atmo bov. With them up front he'd set it up so that the air being vented out by the bov is nonexistent to the ecu.

 

sorry for the crappy terminology, I'm still learning.

Edited by drunken0elf
drunken0elf Collaborator

drunken0elf

Posted
  • Author
Posted
58 minutes ago, niZmO_Man said:

What you'd want is to replace the BOV and HKS mushroom junk with standard parts, clean your AFMs (possibly do a solder fix if it's still acting up when hot), and check your exhaust for leaks.

I for sure need to check my exhaust for leaks.

Now I don't know if I can find the stock airbox, but I'll give it a shot. If i can't what else do you recommend?

The guy mentionned that I need to check that all the original recirculating piping is still there if I am to fit the oem bov. 

I like dtaying stockish so that's kind of a bonus if I go back to oem. 

drunken0elf Collaborator

drunken0elf

Posted
  • Author
Posted (edited)
2 hours ago, niZmO_Man said:

If you can't find an airbox, then I'd swap out the HKS sponge for paper pod filters, and fab up an enclosure. e.g.:

nissan r34 gtr jsai cold air box body kit aero kit aero parts front.jpg

What brand of paper pod filters would you recommand?  Looking around I found this : 

https://www.nengun.com/apexi/power-intake-gtr

Now i don't know anything bout any of this so I don't know if I need the entire kit or just the pods. I'll have to take pictures when I have time.

And that's a sweet looking heatshield/enclosed there. I wonder how it was made. 

Cheers!

Edited by drunken0elf

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
 Share
Go to topic listing


  • Similar Content

  • Latest Posts

    • MBS206
      Dose's Sometimes DIY and Pay Someone Home & Boat Improvement Thread

      By MBS206 · Posted

      Why are people so insistent on making dirty water?!
    • Dose Pipe Sutututu
      Duncan's V37.......race car?

      By Dose Pipe Sutututu · Posted

      Fark what are the changes of that snapping like that, clean. Nek minnit, custom radiator goes in, with built in oil cooler like those discontinued PWR ones from yesterdeacades ago
    • Duncan
      7 Speed Auto transmission fluid change (Skyline, Q50, Q60, Fuga, Q70, A62 Titan and probably heaps of others including Navara...)

      By Duncan · Posted

      I thought I'd do a write up on an auto transmission fluid change for a the nissan 7 speed Automatic. At some stage the genius engineers decided that the fluid in the trans was "for the life of the transmission", (which seems kind of self supporting to me) and removed the dip stick and fill tube (funnily enough there is still a casting for it). Anyway, for this job you do need 2 specialist tools in addition to regular hand tools, jack and good chassis stands. You need a way to pump fluid up to the transmission; I got one of these but there are plenty of other options: https://www.ebay.com.au/itm/364584087070 Don't trust the generic listing though, it does not come with the required adapter for the Nissan 7 Speed. You need one of these, can't do the job without it: https://navarapart.com.au/product/genuine-nissan-patrol-y62-d23-np300-navara-re7-dipstick-fill-connector1 You need a heap of compatible transmission oil. Could be Nissan, could be anything else rated for Nissan Matic S. You need at least 10 litres, I had 15 to give it a better flush... Also, you need some biiig oil catch trays, at least one of these, or bigger if possible (volume was fine, size was very marginal): https://autobarn.com.au/ab/Autobarn-Category/Tools-%26-Garage/Specialty-Tools/Oil-Service/Garage-Tough-Oil-Drain-Pan-Black-16L---GT1068/p/TO03191 Finally, a measuring jug is very useful if your pump does not have volumes marked on it, I got a 6l one: https://www.repco.com.au/oils-fluids/fluid-accessories/measuring-jugs/penrite-measuring-jug-6l-pmj006/p/A5322648 Oh, and gloves.....this stuff is horrible (not as bad as diff oil, but getting there) ....First, jack up your car.....
    • Duncan
      Duncan's V37.......race car?

      By Duncan · Posted

      So I mentioned the apprentice, @LachyK helped take the bonnet off. We just undid the nuts on the hinges and unclipped the gas struts, then pulled the bonnet back a little as the front was catching on the front bar.  I had a good look at everything today and have removed the rams, repaired/reset the hinges and bolted it back together like it never happened. I'll do a separate write up on the repair, and I also removed the poppers from the Fuga today too to save grief down the road.....as said above it is at least $5k to repair retail. I'm also happier about my ability to prepare a race car, and less happy about Nis-nault's engineering (I can hear @GTSBoy sAfrican Americaning) because the top hose of the radiator didn't slip off.......it snapped clean off. By practice I put the hose clamp hard up against the flare on a neck to make it least likely to ever move (thanks @Neil!). I guess that puts a little more pressure on the end of the pipe as it is further away from the rad, but still, that is pretty shit. I've put it back on for now as there was a fair bit of neck still there, but obviously there is no lip on the neck any more so I don't think I'll track it again until I have a new rad. Speaking of which....more research required. It looks like Koyo makes a standard size radiator in ally which I'll grab in the meantime, but I really want something thicker so might have to go custom in the medium term (ouch) Coolant still needs a refill and I have the pressure tester on it over night, but other than a wash down of the engine bay it seems alright. And @MBS206 noted something noisy on the front of the engine and I think I agree....time for a new accessory belt and tensioners I think.
    • Duncan
      Duncan's V37.......race car?

      By Duncan · Posted

      our good friends at nismo make a diff for it, I have one (and a spare housing to put the centre in) on the way. https://www.nismo.co.jp/products/web_catalogue/lsd/mechanical_lsd_v37.html AMS also make a helical one, but I prefer mechanical for track use in 2wd (I do run a quaife in the front, but not rear of the R32)
×
×
  • Create New...