Daves new school holden shambles. The Blue whale is back!

[Muncie]

More boring news, its running great but my wideband is playing up i need to move the earth as its skewing the readings at low load narrow band is showing truth there at least, wideband comes back in range again over about 3000rpm

Running AFR 11.6-12 under boost timing at 8 degrees as boost rolls in tapering up to 12 by 6000rpm and it loves it. Quite rich I'll pull that back a bit once wideband is sorted. But 6psi shes pretty rapid.

I also need to get catch can back on again while NA I was running it back In to manifold but that will be backing up under boost.

Just glad its running and mobile again so I can mow around it. Im pretty sure my neighbours think all the skids around town are me........(its not) they spend enough time out front of my house pointing at my car and ive had cops over once.

[Roman]

How far away is your wideband from your narrow band?

Could it be that you have an air leak ahead of wideband, but after the narrow band (or vice versa) which makes the difference in readings. 
 

As that would be most prominent at low load.

[Muncie]

Same position but 60 degrees around the pipe, im going to move the ground for wideband to same as narrowband on the block.

Oil pressure is still ultra healthy with turbo on 38psi at idle and 80-85 with a rev ive tapped the turbo feed line for oil pressure as that should be where pressure is lowest just before the turbo oil pressure reg, also puts gauge at a good spot in engine bay.

 

[Muncie]

Re fitted catch can today, after fitting the zzperformance.com rocker covers I couldn't bring myself to drill a hole and attempt to weld a fitting to them then I stumbled across an AN 10 to oil cap fitting what a great idea! You chuck it in boom instant catch can outlet.

Its running bloody nice now got pep in her step again i still worry about giving it full beans didn't know automotive PTSD was a thing turns out it is.

[mjrstar]

I'm interested to see how the catch can goes, normally take offs are baffled under the rocker cover to drop the oil out of suspension,  but potentially you don't get this if the filler is straight into the normal cavity area. 

[Muncie]

Previously after 6 months I had about 50ml of oil in catch can If it spits out more I'll plumb it back to sump. It does have bigger ring gaps so I can bump boost up a bit more I may have issues up at 18-20psi of boost if thats the case I'll redo it.

[Muncie]

More groundhog day road tuning, change log verify repeat im now back up at 10psi and its happy as no knock easy roll in to timing.

I cheated a bit and convinced a tuner to spill the tea on what these things like so ive skipped a massive amount of fucking around im overly safe as he runs similar mapping too 20psi on a stock bottom end.

Previously I ran the Paris Hilton tune rich retarded but spicy in all the wrong places.

It now runs a stock portion of map with a few extra degrees of timing in the off boost areas to make it punchy then timing ramps downwards to 8 degrees advance by 3300rpm holds then climbs again by a few degrees as it gets to 6400rpm, under boost its commanding 11.5-12 AFR its rich thats what I'll focus on next.

Ive got some glitchy stuff in wideband logs at idle to about 2000rpm where it straightens itself out. Likely an earthing issue or an old sensor (its seen some stuff)

Its safe logs well its not knocking and bit on rich side. So more driving time is needed.

[Muncie]

Just dropped it off for its second alignment in my ownership. Also the futherest its travelled since first engine came out.

[Muncie]

After decent drive and wheel alignment its back to been well behaved and trust it enough I revved it to the 6000rpm limiter finally.

Tune is a lot more soft in its power delivery however it brings boost in under 2500rpm matched with the new stall speed it can up and fuck off way faster than previously if you stall it up.

I could definitely drive it as a daily! Ive got a recurring engine ligh at moment that is likely a calibration thing more than something broken. Still drives fine.

[Muncie]

Got a new file flashed in no power mods this time ive spent a few nights with CHATGPT  teaching me how the traction control works and how to tone it down so it doesn't just kill all power.

Ive now got traction control that actually promotes traction rather than just kills all power, previously it was wheelspin city then basically engine off almost stall then kind of recover. It now allows some slip initially pulls some power till it grips and feeds it back in gradually, way better.

Really happy with how it drives now I feel a bit better about letting other people drive it. Its probably making 300-320hp at wheels its on boost controller again but just open which gives me 9psi will start adding a few clicks into it soon.

[Muncie]

I Finally completed my Beta version operating system to run this Mafless its taken months and many hours of ChatGpt keeping track ofwhere i'm at with it.

Anyway i've ditched the EGR system and Hijacked its inputs to receive data from a Map sensor it now defaults to this to run instead of the MAF the MAF isnt even plugged in. its a work in progress and needs more tuning but it started first pop after calibrating the MAP sensor this is huge as i am smacking the limits of the MAF at about 12psi of boost and i want more! as far as i'm aware no one has done this using Tunerpro before.

Rough as guts MAP Sensor install photo below.... it works

[shrike]

16 minutes ago, Muncie said:

I Finally completed my Custom operating system to run this Mafless its taken months and many hours of ChatGpt where i'm at with it.

Anyway i've ditched the EGR system and Hijacked its inputs to receive data from a Map sensor it now defaults to this to run instead of the MAF the MAF isnt even plugged in. its a work in progress and needs more tuning but it started first pop after calibrating the MAP sensor this is huge as i am smacking the limits of the MAF at about 12psi of boost and i want more! as far as i'm aware no one has done this using Tunerpro before.

Rough as guts MAP Sensor install photo below.... it works

Not boost referencing the fuel pressure reg?

[Muncie]

1 hour ago, shrike said:

Not boost referencing the fuel pressure reg?

Good spotting, i bought it installed it then found i can just run the supercharged stock unit in the fuel rail. i'll need it once i start running 20+ psi i'll re do everything in AN6 though i'm not $ enough at moment.

In short yes its boost referenced just not on that reg yet. 

[Muncie]

Put a few hours into the MAFLESS Tune tonight ive got it stable above 1100rpm where it drives basically normally had to go deep into things and convince the PCM that no maf is fine and to just roll with it..... so far its now doing it.

Once ive got that sub 1100rpm area happy I can get back into turning it up as 12psi at 5000rpm was the limits of the MAF with the new engine it moves some air! So going map removes that limit.

[Muncie]

More hours into mafless tune theres a coding gremlin in there somewhere which causes it to go pig rich under 1100rpm so naturally I set the idle to 1200 let the hi stall do some work and took it for a few quick hits with the laptop plugged in, kept it under 4500rpm but with calibrated map im make 12.5psi with the boost controller in but set to zero........ and it reads 9 on the boost gauge fucking oops.

The poor old stock engine at drag day was reading 12.5 on the gauge so likely 18plus in the manifold, and then I put another 2 clicks in it after drag day with 20+ degrees of timing by mistake and toothpasted the rod bearings.

On the new tune and with MAP I'm seeing positive boost pressure under 2000rpm which is better than a bloody supercharged engine! 

Im reverse engineering my reverse engineered MAP tune (yes you read that correct) to find a better rpm source as I hooked it to something thats not working how I expected at idle. 

Its close so bloody close I wanted to get out and give it some berries with 18psi in it.

[mjrstar]

Maybe you need to put your glasses on like I did.

0.9 bar is 13 psi.

Me= Oh yeah 15psi that's kinda what I'm targeting,  oh nah 1.5 bar.

[Muncie]

Its a gauge I had that was in good condition visually, I had it in my Volkswagen golf GT which used to send the needle almost right  back to the stop 22-25psi so I think its poked and will now go in bin.

Data though! Nice to have more of it. Never trust an uncalibrated gauge i guess

[Muncie]

Lots about me doing stuff...... none doing stuff.

Here's a high stall check and 0-100kph run, its only short video

 

[Muncie]

Been a while, Mafless tuning has been brutal mainly due to a coding glitch that's so deeply buried in the operating system its like the pcm has a virus.....

Between 1100rpm and about 4000rpm the engine runs fine calculates airflow fine and runs and drives well towards idle it glitches out and thinks its flowing mega air dumps heaps of fuel in to point its spitting raw petrol out exhaust, over 4000rpm opposite airflow drops and it starts going lean. Both situations are physically impossible so its a glitch in matrix.

Thats just on the Mafless tune with maf plugged in its runs and drive great has a tune thats better than its ever been doesn't knock at all at 12psi its actually quite scary to drive ive softened the traction control so it gets up and launches allows some slip and ramps power in till it fully grips. If anyone has ever driven a v6 in wet you'd know how shit traction control was with these it would kill power so aggressively you'd end up stuck rolling across intersections sputtering waiting for it return to normal.

I think ive got a lazy lifter unfortunately it is a bit ticky when cold but does go away once warm, they were new so hoping it sorts itself out with fresh oil, not end of world I'll keep an eye on it.

 

 

[Muncie]

So in another side quest now im elbows deep into custom PCM operating system for Holden's ive bought the full engine loom amd PCM From a VZ LS1 v8

The whole idea been to have a more modern setup that can talk to the cars dash and transmission and not cost $6500 for an aftermarket unit, will give me modern coil near plug ignition, drive by wire, easy Mafless tuning, electronic boost controller by the pcm and dual wideband. And enough memory to patch in more features later on like 2 step boost by gear.

This is an expensive change so won't be quick to get up and running as I now need all the other bits and pieces that plug into it and the car.  And to convert my car to a ls1 style trigger system. Hopefully I can fund it by doing some LS V8 tuning mods for people once ive played around a bit or very least set up Mafless and turn off VATS for engine swaps.

@vk327 if i could pick your brain on what im missing to get a complete system I'd be keen to get you to do the loom eventually