As the name suggests I'm interested in what aftermarket midpipe options are available with a type approved catalytic converter but with the most bore so as as to comply with UK and EU laws whilst maintaining a little performance.

I have obviously found 2.5 ta cat midpipes with and without...

Peeps

I have a theory that the link pipe for the secondary air pipe has a negative effect on the tuning ( such as it is) of the exhaust

I did an experiment on my tubular manifold a few years ago where I blocked it off so each port was closed and found the airflow was increased at lowish rpm (...

Gents

I've unearthed the dyno results from a few years ago
these were lost due to the server housekeeping event
so I thought some folks might like to see it

rx8 power.xls rx8 power.jpg

Bought my '8 a couple of months ago and I'm looking to be doing a couple of mods over the next few months to help keep it in good order.

First up will be a mini map primarily for a cold rev limiter and an increase to the OMP. Are there any that anybody particularly recommends?

I'll also be...

Having a bit of a tinker at the weekend with Versatuner and some logging.

I'm making an assumption... Higher load = higher air flow meter reading = a good thing? I've overlaid auxiliary opening and VDI switching onto a log and tempted to say both should move a bit later... Versatuner has 2 values...

So, my class needs a cat. The standard cat is susceptible to blocking with carbon, but also as I understand it, the standard map is on the rich side to manage EGT's and look after the cat. I'm building an exhaust from scratch, so can put things where I want them. Any thoughts on the benefit of...

Need some advice guys; I've replaced my cat recently as it was blocked with a straight-through pipe but it was mated to the standard Mazda cat back exhaust. The exhaust is OK but the tips are getting past their best with corrosion & there's a good rattle coming from inside the back boxes, sounds...

Finally getting around to fitting my ram duct etc. John's asked the question of if there's anything we can do tuning wise that's simple enough for a minimap whilst we're also doing that.

Or if it's best to leave it as is.

Saw this and thought it was at least worth browsing

I´m interested in acquiring a software to modify the Ecu of my RX8.
I have seen that there are 2 products: Versatune and Mazdaedit
Versatune works with the versalink usb interface and mazdaedit works with Openport.
I have seen that most of you use Mazdaedit, is it for some reason?
Which one do you...

Hello all

I'm eyeing the the essex rotary underdrive pulley set as I need a larger crank pulley to get the pulley ratio I need for the charger

does anyone know what size the pullies are?

I've mailed essex rotary a couple of times to no avail so far

It doesn't seem to have been covered much, and that's probably because the OEM intake system is pretty good, but in order to fit the engine into my Westfield the way I want to fit it, I need to lose around 60mm of height... and that means losing the standard setup. That leaves me with two options -...

Hi All, I have seen a post or two regarding the offset superpro kit, and also the whole oem vs poly saga. There was a hint towards one of you guys knowing the individual oem Bush part numbers rather than buying a whole arm, I have searched and failed to find any more on this, does anyone actually...

My LTFT is always zero. It never changes. I first noticed this when Carl at rrp did some MAF scaling and tuning for me with Mazdaedit.

I can see STFT moving a few % during closed loop but LTFT is always zero. It's been like this for over a year with no obvious issues.

Any ideas?

I'm intrigued that a silenced decat ( from TPS is £470, while a 'hi-flow' sports cat ( is £250.

My thoughts are that a silenced decat should be ideal for 364 days of the year, will reduce risk of damage and allow a richer fuel mix whilst not being too obnoxious for motorway hauls. But if a sports...

Now that I pretty much know I won't be getting my warranty ;) so I thought I would post about this.

Is there any benefit of changing the AUX & VDI opening rpm?

I've used the settings that were detailed on the versatune site and I felt there was a bit flat spot where the AUX opening rpm had been...

Hi Guys,
I found a new type of tuning box yesterday?
the highlights were you can hold up to ten remaps your self and choose which one you want to load into the car on a whim.
I see its usage would be if you wanted --

Standard tune
Street Performance
Street Performance with pops and bangs
Economy...

I intend to come back to this a little later, in its current form it is quite incomplete and will be by no means instructional - more an interesting little titbit.
Bearing clearances, oil flow and oil choice is more complicated than the generalisations in this post may make it seem.

- - - - - -...

Ok yes this is probably thought of a waste of time to some, but if done correctly the gains can be eye opening!

I've noticed the massive difference outputs std and even with the same ish tuned engines! This can mostly be due to tolerances of the spinny things being out and yes different oils,...

Does this net any gains on a RX8 or not advised?

I have a spare kit, i could install.

It's worth me starting by saying this is a bridgeported motor and fuel consumption i'm not too bothered about.

I experienced the car feeling sluggish up to the secondary ports opening.

Took it apart and there was a vacuum leak on the solenoid stopping the first ports opening.

With a better...

Has anyone done it? installed a larger bore throttle body?

Is there a complete itb solution available?

I see racing beat offers adaptor plates to install carbs, that would surely be a ecu / cabling nightmare.

So hypothethical question for the boffins to mull over...
So we know each chamber has 2 coils and 2 sparks..a leading and a trailing and the trailing fires a short while after the leading in order to complete the burn due to the large combustion area..
The coils are fired by there individual...

Are the benefits good from putting an ultra lightweight flywheel on?

Looking at ordering over next day or so, any recommendations would be good or if anyone has a new one for sale give me a message!

Just figured if I'm doing that I may aswell uprate the clutch too whilst there!

Wotcha

so with the recent Dyno Might results that show PeteH's manifold to be the tweak of the week I thought I'd open the discussion
I've attached a spreadsheet with a rough calc for exhaust length and the key part of the calc is the exhaust cam timing BTDC so has anyone got any figure for an the...

Peeps

I see that the PZ exhaust is often mentioned as being a good option for a nicer exhaust note? is it worth anything in cash and power over the stock exhaust? as I've been told that its a full Stainless system? is it any larger diameter? Is it louder than stock ( which would indicate its...

Hello to all....iv recently fitted the d585 coils and im looking to have a mini map done to change the dwell angles...i live near chippenham wilts and was wondering if any1 could give me info on the closest and best place to have this done...cheeers in advance.

Sent from my SM-G955F using Tapatalk

Hello All

my car came with a 'ghetto' decat unbeknownst to me so come november time I'll be needing something to pass the MOT

I see lots of reports that the cheap ebay and eurocar parts cats are no good and will last about 3 weeks

so my question is are there any good quality aftermarket...

Ok guys, I've read posts until I'm half blind, and that has helped me in my quest to solve the issues that my second RX8 has....however, on the good one, where I have no issues, I'm wondering what a 192 needs to be uprated to 231......is it just a remap, or is the engine physically different ? If...

A few months ago I snapped a bolt on my aircon ( front of the engine bay next to the  coolant tank ) a load of gas came out and it really didn't taste very nice !
I wasn't too bothered about the lack aircon as going into winter ect but looking forward I'm not sure what to do.
I'm looking at the...

Just wondering if anyone has had one? My mate is a quantum dealer and a reputable tuner, he's been on the scene for a while and knows what he's doing so was wondering if anyone has had one, failing that anyone know of a mazdaedit tuner round Oxfordshire/Berkshire. (My time off is limited, I work 7...

Hello everyone, please don't hate, I'm just sharing some knowledge from a different forum!

So back when I had my RenaultSport 200 (2liter one not the 1.6 panel shift model) I was also part of there owners club/forum, the guys over there were similar to here, either trying to squeeze as much power...

Hello. Just a quick one.
Managed to get a JDM car in today to have a look at the fuelling which was thought to be mapped richer on the bottom end resulting in apparently less grunt. This turned out to be not the case it seems.
Caveat: UK car was a 192 manual. JDM car was a 192 Auto. I have no other...

Just throwing this out here to gauge opinion as i am in the middle of planning and researching for a project that i want to get rolling within the next few months!!

I have heard bits about itb's being used for rx8s.
im not massively up on the mechanical side of the car/engine just yet.

So please...

So I'm mid RX8 race car NA build and feel with the mods being done a map of the standard ECU will help bring it all together.

My issue, the car is obviously not road going, I need to sort it all by 18th March and I live in the South West where no rotary mapping specialists appear to be based!

Is...

Firstly apologies if this has been covered before I couldnt find anything definative on the matter.

Ive almost bought a racing beat revi intake and duct a few times now when I get new parts withdraw symptoms and had to stop myself by convincing myself for £500 its not worth it.

What put me off...

I see Racing Beat do some lightened rotors although they are not cheap. I see there have been a few posts about this on the US forum. Makes the engine rev more freely and supposed to reduce wear. Anyone any thoughts on this?