Jump to content

Server Lease Renewal/Software Licenses

Our yearly server lease, software licenses, as well as hardware operating costs, ARE due Dec 6th, 2021. Our current donations have fallen far short of the funds we need to renew. Please remember the RennTech.org community is Member supported so please consider a donation to help...  THANK YOU!

Welcome to RennTech.org Community, Guest

There are many great features available to you once you register at RennTech.org
You are free to view posts here, but you must log in to reply to existing posts, or to start your own new topic. Like most online communities, there are costs involved to maintain a site like this - so we encourage our members to donate. All donations go to the costs operating and maintaining this site. We prefer that guests take part in our community and we offer a lot in return to those willing to join our corner of the Porsche world. This site is 99 percent member supported (less than 1 percent comes from advertising) - so please consider an annual donation to keep this site running.

Here are some of the features available - once you register at RennTech.org

  • View Classified Ads
  • DIY Tutorials
  • Porsche TSB Listings (limited)
  • VIN Decoder
  • Special Offers
  • OBD II P-Codes
  • Paint Codes
  • Registry
  • Videos System
  • View Reviews
  • and get rid of this welcome message

It takes just a few minutes to register, and it's FREE

Contributing Members also get these additional benefits:
(you become a Contributing Member by donating money to the operation of this site)

  • No ads - advertisements are removed
  • Access the Contributors Only Forum
  • Contributing Members Only Downloads
  • Send attachments with PMs
  • All image/file storage limits are substantially increased for all Contributing Members
  • Option Codes Lookup
  • VIN Option Lookups (limited)

Is the Hitachi MAF sensor better than the Bosch?


Dus10R

Recommended Posts

I see that some tuners are switching over to a Hitachi MAF sensor with thier tuning kits, are these better than the Bosch OEM units? I see where you can even buy a special tube that allows the Hitachi unit to fit "The Mode air intake tube is designed for the Prosche 996TT's needing to run a Hitachi Mass Air Flow Sensor. An opening has been made in the intake tube that allows the fitment of the Hitachi MAF sensor."

I've been having problems upon just starting the engine, especially on hot days, with the idle jumping up and down and sometime it will die. This only happens right when you start it and let it idle for a bit; after it's warmed up or driven a bit it doesn't do it.

I checked for codes and there are none, except one time, right when I started it I got a 115 Hot film MAF sensor code, which has led me to believe that the MAF may be the cause of my idling issue.

Anybody else use the Hitachi unit?

Link to comment
Share on other sites

you will need your ECU altered to use the Hitachi MAF...it is not plug and play...Do you have an aftermarket intake or filter? Any ECU flash? It is better to understand why the MAF is giving a false signal than to just implement potential solutions without understanding the fault. Others have cleaned the MAF to some reported benefit.

Link to comment
Share on other sites

you will need your ECU altered to use the Hitachi MAF...it is not plug and play...Do you have an aftermarket intake or filter? Any ECU flash? It is better to understand why the MAF is giving a false signal than to just implement potential solutions without understanding the fault. Others have cleaned the MAF to some reported benefit.

Stock intake but using a K&N which potentialy could have been over oiled. So I plan on cleaning the MAF and the throttle-body and then will take it from there. It just seems to me that I read about a bunch of MAF issues with the stock Bosch units and the tuners are switching to the Hitachi types which they claim are more robust. So these are not plug and play, they don't output a digital signal like the Bosch units do?

Link to comment
Share on other sites

  • 4 years later...

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue.