madkaw

Thanks so much !! I will study these . I’ll download your tune and look at it . Sounds like our engines are very similar . what head and port size ?

Are you running Tunerstudio? Either way would you share some screen shots of your tables ? Curious how efficient you have the motor running as far as power vs mpg ? 45’s to small or looking for more power ? I think my small port head will like the smaller ITBS . You have a thread I can read up on ? thanks

All I’ve read in my adventure is that there is no way to run ITBS with speed density correctly . After tuning with MAP for years I see why you have to run Alpha . ITBS put you at atmosphere pressure so quickly with no plenum . It’s a challenge to rethink how the tables work with ITBS for sure .

You should really just post on FB because they love trolls and useless posting there

What’s funny is that just cruising around is all I’ve got done as far as a tune . I’ve got a Z friend Yanni Maltabes that use to post here I believe . He swears he can help me tune purely alpha N and it will as good as MAP . I’ve also come to the realization that I can no longer be lazy about learning Megalog viewer and analyzer . Maybe also got lucky that these FAJS ITBS seemed to be very solid right out the box . Solid idle and good enough to drive and tune . I also know my engine very well so I will know when I have it right . Who knows if I will stay the course forever or try my diesel intake later . Are you running the ITB or Alpha N ? Yanni tells me he can run every table strictly from TPS - which seems daunting . When I started reading about scatter plots and needing data logs from MAP runs to utilize ITB mode in MS is when I decided to go strictly TPS . I will have MAP in the background

I’ve been making an effort to get back to the forums . I usually post a link to here when people ask about stuff that’s been documented here for decades . My last job as an over the road locomotive engineer gave me lots of time in hotels to document . Now I’m retired and busier than ever - but use that as an excuse to not post . The forums saved me money and time and I’d like to pay it forward ! Now I’m the local Z guru which has made some cool connections and projects . I wish there was a better marketplace than FB - but it’s probably the best thing about FB- lol

It’s been a while since I’ve read on this thread. I wish I was # 23 ! Wish the thread did see more action as well as the site . I’m so tired of the FB shit

Ordered some cheaply sponge filters while I wait for my CAI box to get finished . Made a smaller vacuum log -3/4” PVC pipe . Despite having one of my widebands flaking on me I was able to drive around well enough that I wasn’t scared of dying on the road anywhere . Not much help out there for guys running MS and ITBS. Seems most Haltech or others . I’ve also got different perspectives on how to load certain tables . I have Yanni saying that all the tables can be run off of TPS and Richard that says running timing off of MAP is best . Presently I am going to try and run it all TPS . I can only hope the FAJS version of a TPS is accurate and reliable . I might eventually go with a contactless style from EFI hardware . For now I haven’t gotten past 38% TPS on my tuning so I’m not stressing my TPS to hard that’s for sure . Honestly - I didn’t think it would run even this good this early in the tune . I am trying to be patient with throttle input since I do hit big lean spots . I am also learning how to use Megalog Viewer at the same time that has a VE analyzer which is pretty damn cool .

Drove around yesterday with heat shield on . The tune is pretty rough and and sometimes the car wanted to die from starvation -scary . I used timing to lower idle after reading about a trick to deal with hit idle . Might have to call on Richard to help me remotely . Lots of rain right now so driving time is scarce .

Reducing vacuum line size seems to have helped the MAP reading. Looks like I might even get 60kpa at idle too! First drive was interesting for sure. Almost stalled pulling out in traffic and rich and lean mixtures all over the table-lol. The autotune was trying to correct but some of my settings were off. I didnt stay out long because it was Little 5 in Bloomington and too many crazy kids out . Monday when everyone is at work Ill do some more tuning, Idle seemed to increase as the engine got hotter. No heat shield yet so that is an issue

Latest version of mock up for test flight . It started up easy and just idled nicely - I was in shock - lol. MAP readings was around 65kpa at idle which isn’t much different than the plenum idled at . Reading was jumpy so I talked with Richard and dropped the vacuum like size from .250 to .125 - which should help smooth out the reading . Big cam and all it just idled and blipped ! Wont have the my CAI done for a minute so I’m going to run open stacks until my foamies come in . I won’t run it long like that but to get a base tune down . Murdered out my vacuum log so it would be so obtrusive .

Good news is my exhaust collector is ready for pick up ! Bolt this thing up and ready to fire . Reached out to Chickenman- Richard Boyk - who said he’s done tuning with ITBS before has set me up a base tune . Can say enough how helpful this is since Alpha N is all new to me .

ITBS are bolted down after doing some fitting of the Maxima Diesel intake . Still waiting on the welder to finish up my collector pipe so I can’t start it yet . Also need to finalize location of vacuum log that will be inside my CAI - whenever it gets done at the welder . I wish I could TIG worth a shit and my life would be easier - lol. Still most of the back breaking work of bolting this down and plumbing should be good to go .

New exhaust for the 3.2 ! Serious drone issues from failing resonators made me go to a single thru the resonator . This resonator has a J pipe to help with the HZ 110 I had at 2200 rpm . With my tall OD this was an issue. I went with Borlas out back as big as I can fit so in the end I’m hoping for a quieter exhaust and less drone .

Did more work in the ITBS . I’m mocking stuff for test runs to see what might work and what might not . Goal is a decent MAP signal up to 30% throttle and be able to run brake booster and PCV . I thought the PVC would work for the PCV - lol. Just all temporary fun. The base plate will be trimmed down to about 6” . Running 1/4” vacuum lines to this 1” log . It might be a bit big but I want it to do a lot Final iteration might be 2 vacuum logs . Maybe ready to fire in a week or so