Performance Mods

[Parallex]

Which supercharger are you going to use? A shaft driven unit? Belt driven? Blower? Lobe? What sort of PSI etc?

Also, are you upgrading the internals etc? E.g. is it worth shelling out £900 for the IPP internals kit?

Ben.

[tweek]

I will be using the same unit i took off the Probe,a Rotrex centrifugal,it`s a t3-4 turbo fitted to a 4 speed gearbox ,the whole item is the size of an alternator positioned with a fabricated bracket in place of the A/C.I chose the S60-94 trim,with a plan to upgrade to a larger size on a "Built" motor
We have a set up on my friend Collin`s car at at the moment she`s running on standard internals but....on the Dyno we have 336.3 WHP @ 7751 RPM with 248.1 WTQ @5770 RPM ,the torque only drops 18 lbs all the way to 7751 RPM,boost is 8-11 psi.He has also fitted a D.T.A. management system.
I ran my PGT "Max" with the same set up for 2 years and had no problems with the standard bottom.
Care and attention to detail and setting up was the key,a wide band AF and patience.
Once my 6 is S/C`d i plan to build a low comp ZE motors with new rods and pistons and a larger S/C

[David MX-6]

Is there another way to get to this link regarding the fuel rail mod ? http://www.rs-productions.com/RSP_Mo.../banjobolt.htm

[Oddball]

see our little 'mods' database.. www.mx6db.co.uk

Oddy.

[David MX-6]

Thanks for that oddy

[Maputosimon]

I know I'm probably breaking lots of rules, but can anyone help with this?

http://www.mx6.com/forums/2g-mx6-gen...ml#post1765732 (How do I make my n/a mx6 Ls faster? (without adding turbo))

Tks!

[Parallex]

No rules being broken here mate. Its all on topic.

The problem you face is that without going down the forced induction route, and not using blow, you are going to find it hard to get any more ponies out of your engine. the biggest restriction is VRIS system and manifold. To be honest it is highly restrictive in terms of modifications to this side of things. The fact that the ECU has it hard coded in makes it even harder to change.

The best modification I have seen for this sort of thing is to remove the VRIS system all together, and get two banks of 3 Suzuki GSXR Throttle bodies sitting on the intakes. Obviously this would need an adapter casting to be made, and also a custom programmed Management System. In theory this could be quite cheap in total, as the parts wouldn't necessarily cost the earth. But if you don't have the capability within your grasp for doing any of the work yourself things will get quite expensive.

To be honest the cheapest way of getting things moving under your hood is get a BLOWER on the intake. Not quite a 'normal' supercharger, it essentially increases the air intake pressure proportionately. Easily controllable, (doable with an FSE - but not reccomended) with an FMU like ASCII etc.

You don't have to touch the rest of the engine. All you need is to connect the blower up to the belt system on the engine, have an intercooler, pipe system and have an FMU. Thats literally all you need to be honest. As long as you don't go for anything crazy, you'll be ok.

Gimme a shout if you want more info, I have been researching this for about a year.

Ben.

[Jamo]

So you've done the breathing mods, CAI, headers and exhaust! A fine start and a pre requisite on which to base any engine works.
You could spend a small fortune, balancing, and porting, and polishing and flowing and blueprinting, and oversizing, general fettling and fine tuning, and each one on its own may not produce the kind of result you are looking for. Small Individual gain for not so small financial pain!
The most favoured option for an N/A power hike seems to be the 'Ze route or go lighter!
Get rid of that spare wheel, and replace those heavy front seats, dump the cruise control, slap on some lightweight alloys, 17's if you want the look, 16's if you want to shift it.
Now, not only are you going faster you're mpg has improved too!
I had to take out a seat not long ago to have some repairs done to the stitching, couldn't believe how heavy those mutha's are!
This is my second six, and came without a sunroof, or cruise control, and had a space saver for a spare, and I've definately noticed the improvement the weight saving has made.

[Maputosimon]

Wow, guys, so many options!

Got a guy in the US telling me the only way to go is hotshot or ssautochrome headers (to clarify, I haven't done the headers yet), but weight reduction does make sense...Denise is on a diet .

My wheels are looking shabby, so was thinking of going for a restoration, but does anyone do lightweight original-lookalikes?

The replacing VRIS seems exciting and exotic, but do you still get that lovely pick up and vroom sound after 4000 revs? With the blower, would I have to upgrade to the legendary Walbro 255? Can someone explain to this dunce (me) what an intercooler would do without a turbo?

I guess the final thing, Ben, is any ballparks on cost of all that stuff? Thanks again!

[keza1]

WOULD YOU ADVISE ANY SUPER CHIPS??
IF SO WHICH ONES?
I USE MY FRIENDS COMPANY www.ep-racing.co.uk AND THEY SAY THEY NEED TO SNED THE ECU OFF
DOES IT MAKE A DIFFERENCE TO PERFORMANCE ON A 2.5 V6 MODEL?

[keza1]

Also....best Places For An Exhaust??

[Oddball]

Originally Posted by keza1

WOULD YOU ADVISE ANY SUPER CHIPS??
IF SO WHICH ONES?
I USE MY FRIENDS COMPANY www.ep-racing.co.uk AND THEY SAY THEY NEED TO SNED THE ECU OFF
DOES IT MAKE A DIFFERENCE TO PERFORMANCE ON A 2.5 V6 MODEL?

I very much doubt you will see any benefit from another ecu mapping without extensive mods to the engine.

Originally Posted by keza1

Also....best Places For An Exhaust??

Off the shelf from scorpion exhaust, other have used powerflow. Remember to also use 'for probe' as well as 'mazda mx6' when looking around for an exhaust.

Oddy.

[alan baldwin]

Hi Cruisemad,

Mine is a 1996 2.5 V6 with a Powerflow stainless straight through from the back to the CAT. Also, I fitted a stainless filter and that is the limit of my talents apart from exterior and interior mods - after all, I am 67 years young.

Went to the USA site because I was thinking of a chip (nothing from the ebay resistor merchants of course - who on earth would want an extra 200 bhp at 500 rpm?).

Love your article that I can actually read and understand, it not being in some specialised language.

I've driven from here (Malta) to the UK and back three times and would welcome a bit more acceleration to get away from the Italians on their autostradas.

As I am not up to it knowledge wise, is a re-chip worthwhile? I read on one ad that the 1996 onwards MX6 cannot be chipped but only reprogrammed. Then, I read that the USA boys do chip their second gen. cars. If chipping is possible, is the increase in bhp only at 4000 rpm and upwards, or is it across the range of revs.

Lastly, what sort of across the board should we expect from a chip? Obviously, it is not going to be like strapping on 18 twin-choke Webers so does it work out to, say, £100 per 1 bhp?

If you want to swear at me, please do. If you want to swear at me without it appearing in MX6.com, do it on my email which is alienx@maltanet.net.

Regards,

alan.

[Einstein]

Hi Alan..

Cruisemad hasn't been on the club since August 2006... and sadly is not likely to reappear anytime soon.

However, to answer your question... Mazda got the ECU programming pretty much spot on, so there is little to gain from a std engine..

You have already done the cheapest and best options of intake and exhaust, and unfortunately, any more is likely to cost mega bucks.

NOS is one option, but limited to bursts, and the size of the bottle... coupled with refill costs..

A turbo is probably going to be the pinnacle, where chipping can see huge benefits by tweaking up the boost.


John

[Parallex]

Hey Alan.

John (Einstein) has pretty much hit the nail on the head with this. The software side of things has slim pickings in terms of beefing up your motor.

As I have said in a previous (quite to hard to understand) post, I am a big fan of superchargers rather than turbo's. I have found the biggest limitation for engine modification is actually space under the hood. The pipework, wastegates and other goodies needed for a turbo system requires an awful lot of space.

I am building a system using a geared supercharger (Blower type) which will fit just below the alternator. This supercharger will then be attached (via an intercooler) to the inlet manifold system (bit on the top). There is no need for any wastegates, turbo piping, or anything else. I am expecting somewhere just shy of 300 BHP with this project.

My motor will be a KLZE version of our engine, rebuilt with high quality internals. So if you were to do anything similar without the rebuild, you could still use one of these special superchargers (Rotrex) and set it up so that it wouldn't boost too hard on the stock engine. This has been done before, very successfully.

Good luck with your quest Alan, I really hope you get the opportunity to makle progress on your motor. Plus, I'm exceptionally jealous, I have always wanted to go to Malta, it appears to be an amazing place.

Ben.