VersaTune User Forum

Does anyone have any knowledge of how someone makes a ghost port tune on an rx8 for 6 port? Or does anyone have a usable tune?

Today after almost 6 months (not like I was trying every day or something) I got a somewhat ghost bridgeport tune. It's on my laptop so I don't have it in this PC, but once I connect the laptop to internet, I'll upload it to my drive and post some updates on it. It wasn't hard, it wasn't easy either. I needed mr 80HD's tune as base, but I modified Idle leading timing RPM correction map (1st half to 0 is set to 20, 0 is set to 0, and after it's -20), and Idle Leading Timing is -20 -20 20 20 25 30. As for trailing, I've read someone saying that it's not important at all, but just in case, I did almost the same. Idle Trailing timing is -18 -18 20 20 20, and Idle Trailing Timing RPM Correction is -15 all the way to 0, 0 is 0 and the rest is 15.

As I said, this is my first attempt, it does brap, very inconsistent, the part with the vibration I was aware from posts on Reddit, but for now it sounds very rough. I like it, but at the same time I feel like it could sound better than this (probably changing trailing charts like they were done by 80HD or even stock and not messing with it. I'll update as I modify it, because right now I'm just perfecting my own tunes.

https://www.youtube.com/shorts/qO3Ik4063Jk there's the result of it. You may not notice it in the video, but beside me being retarded, out of the video it sounds way more rough, actually like little pops coming out of the exhaust when "brapping".

Great work!

I too tried similar but had no luck, probably because of my actual bridgeport. Needed to sneak up on where it wanted to brap and enhance it.

What you have done is what i couldnt have but looked to do.

Did you use my tunes base timing? If so that would be spitting out close to 45 degrees advance in some instances. I dont know what the safe limit is, just be careful.

Also, id suggest you make changes to get it better over a week or so of driving as i noticed flashing with changes with a motor heatsoaking impacts its general behaviour. And may also have adverse impacts such as hanging revs or surging in other non idle conditions. A flash, drive, think, rest, drive, change, repeat worked better than 50 flashes in an hour in the driveway diring "refinement". But sometimes you just gotta break that egg to make an omelet, go hard and experiment.

Now go and enjoy!

80HD wrote: ↑April 28th, 2024, 1:22 am Great work!

I too tried similar but had no luck, probably because of my actual bridgeport. Needed to sneak up on where it wanted to brap and enhance it.

What you have done is what i couldnt have but looked to do.

Did you use my tunes base timing? If so that would be spitting out close to 45 degrees advance in some instances. I dont know what the safe limit is, just be careful.

Also, id suggest you make changes to get it better over a week or so of driving as i noticed flashing with changes with a motor heatsoaking impacts its general behaviour. And may also have adverse impacts such as hanging revs or surging in other non idle conditions. A flash, drive, think, rest, drive, change, repeat worked better than 50 flashes in an hour in the driveway diring "refinement". But sometimes you just gotta break that egg to make an omelet, go hard and experiment.

Now go and enjoy!

It's easier posting and than just telling you what I've done and maybe I mess up.

There's some changes to your map, also the most significant is that I've changed my VFAD to 99999 RPM since I don't have the stock box anymore.

0124alexrx8 wrote: ↑May 8th, 2024, 3:59 am

80HD wrote: ↑April 28th, 2024, 1:22 am Great work!

I too tried similar but had no luck, probably because of my actual bridgeport. Needed to sneak up on where it wanted to brap and enhance it.

What you have done is what i couldnt have but looked to do.

Did you use my tunes base timing? If so that would be spitting out close to 45 degrees advance in some instances. I dont know what the safe limit is, just be careful.

Also, id suggest you make changes to get it better over a week or so of driving as i noticed flashing with changes with a motor heatsoaking impacts its general behaviour. And may also have adverse impacts such as hanging revs or surging in other non idle conditions. A flash, drive, think, rest, drive, change, repeat worked better than 50 flashes in an hour in the driveway diring "refinement". But sometimes you just gotta break that egg to make an omelet, go hard and experiment.

Now go and enjoy!

It's easier posting and than just telling you what I've done and maybe I mess up.

There's some changes to your map, also the most significant is that I've changed my VFAD to 99999 RPM since I don't have the stock box anymore.

sorry new to the thread, but does this tune work for just a stock motor?

Axulx wrote: ↑June 28th, 2024, 4:36 am

0124alexrx8 wrote: ↑May 8th, 2024, 3:59 am

80HD wrote: ↑April 28th, 2024, 1:22 am Great work!

I too tried similar but had no luck, probably because of my actual bridgeport. Needed to sneak up on where it wanted to brap and enhance it.

What you have done is what i couldnt have but looked to do.

Did you use my tunes base timing? If so that would be spitting out close to 45 degrees advance in some instances. I dont know what the safe limit is, just be careful.

Also, id suggest you make changes to get it better over a week or so of driving as i noticed flashing with changes with a motor heatsoaking impacts its general behaviour. And may also have adverse impacts such as hanging revs or surging in other non idle conditions. A flash, drive, think, rest, drive, change, repeat worked better than 50 flashes in an hour in the driveway diring "refinement". But sometimes you just gotta break that egg to make an omelet, go hard and experiment.

Now go and enjoy!

It's easier posting and than just telling you what I've done and maybe I mess up.

There's some changes to your map, also the most significant is that I've changed my VFAD to 99999 RPM since I don't have the stock box anymore.

sorry new to the thread, but does this tune work for just a stock motor?

supossed to, what's the point of ghost porting a bridgeport? XD

sorry i meant as in like with certain mods (coil packs, catless, etc.)

Axulx wrote: ↑July 8th, 2024, 9:42 pm sorry i meant as in like with certain mods (coil packs, catless, etc.)

Went out for cigarrettes
So for the mods. I run AEM intake, slightly ported intake manifolds (shouldn't affect anything, after all I just remove cast marks, I didn't enlarge the ports themselves). NGK coils, 8.5mm wires, catback which doesn't affect, and the most important is the decat, which doesn't "affect" either but you'll need it in order so you don't destroy the mesh or fill it with unburnt gas.

You may also want to look at the idle table correction multiplier (i think it is called. Will update when i get v tuner up again to look) this will help manipulate an idle timing not as per revs but at load at a given rev.
Idle appears to be about 0.25 load or less.
Should you choose, you may find that as load increases (throttle opens, maf increases, same or similar rpm) you may be able to add some timing to get the revs to pick up. When at lesser load (rpm is above desired, tb closes and maf decreases) the load drops. Taking timing out may help make revs fall.
You would need to do A LOT of reflashes and experimenting with load multiplier and base timing values however could get the idle to become unstable, to drop, overshoot and drop again like a bridgeport pulse.
Ive cleared all my load multipliers in the theory it lets the idle pulse at idle with bridgeport overlap without the ecu trying to fight or mess with the brap. Seems to work, however i wonder if the opposite can work for a stock.

80HD wrote: ↑August 14th, 2024, 12:33 pm You may also want to look at the idle table correction multiplier (i think it is called. Will update when i get v tuner up again to look) this will help manipulate an idle timing not as per revs but at load at a given rev.
Idle appears to be about 0.25 load or less.
Should you choose, you may find that as load increases (throttle opens, maf increases, same or similar rpm) you may be able to add some timing to get the revs to pick up. When at lesser load (rpm is above desired, tb closes and maf decreases) the load drops. Taking timing out may help make revs fall.
You would need to do A LOT of reflashes and experimenting with load multiplier and base timing values however could get the idle to become unstable, to drop, overshoot and drop again like a bridgeport pulse.
Ive cleared all my load multipliers in the theory it lets the idle pulse at idle with bridgeport overlap without the ecu trying to fight or mess with the brap. Seems to work, however i wonder if the opposite can work for a stock.

Yeah, I've read the post where you kinda explained that, plus the richer/leaner AFR. I guess for a ghost bridgeport I'd want a richer mixture rather than lean, but I can try lean aswell, since I already done some lean tunes for extreme economy driving.

Thanks for the tips too. I will try doing some sort of stuff with the ghost bridgeport tune once I can drive the car again, I had a slight problem with a front tyre full of rocks that went into the tire from the side and now it looks like I'm running Pirelli Cheese wheels.