Cosworth supercharger for the NC

Juffa · Postby **Juffa** » Sat May 23, 2009 11:19 pm

Just found these. Thought they may be of interest to this thread.

http://www.youtube.com/watch?v=Rr5aRwslbsg&feature=fvsr

http://www.youtube.com/watch?v=kGoruMsydoY

http://www.youtube.com/watch?v=e8K2_Nl0 ... re=channel

http://www.youtube.com/watch?v=RYrQjbZa ... re=channel

J

CoffeeBoss · Postby **CoffeeBoss** » Mon May 25, 2009 8:58 pm

Well after all the doom and gloom of engine destruction post S/C install, bluemeaney's car makes me lust of the Cosworth supercharger all over again! Sounds fantastic! Full Goodwin Racing RoadsterSport exhaust with RoadsterSport Q muffler (GW Racing's 'quiet' muffler). Tasty.

CoffeeBoss · Postby **CoffeeBoss** » Mon May 25, 2009 9:36 pm

He's seems to enjoy demonstrating exactly what it is like

S/C NC with full exhaust vs standard car:

CoffeeBoss · Postby **CoffeeBoss** » Mon Jul 06, 2009 7:58 pm

Flyby at Laguna Seca.

JBT · Postby **JBT** » Wed Jul 15, 2009 9:35 am

Yes, there are problems with the Cosworth SC and the NC. There is more on the US website.

@ndrew · Postby **@ndrew** » Wed Jul 15, 2009 9:54 am

There have actually been more than 2 engines that have popped worldwide.

Spoke with a Japanese workshop owner whose had 2 engines blow due to bent rods and damaged pistons. His up to his third engine at the moment. :shock:

I'll try to post a few pictures soon.

Hammer · Postby **Hammer** » Wed Jul 15, 2009 7:40 pm

@ndrew wrote:There have actually been more than 2 engines that have popped worldwide.

Spoke with a Japanese workshop owner whose had 2 engines blow due to bent rods and damaged pistons. His up to his third engine at the moment. I'll try to post a few pictures soon.

Hmmmm??? Sounds similar to the SPs - only worst :oops:

zombie · Postby **zombie** » Thu Jul 16, 2009 12:28 am

There's at least one engine failure in the U.S. as well.

The engine in the "Blue Meany" - the star of most of the videos in this thread - failed in mid to late May after experiencing detonation

Original post ... more info at the Blue Meany Blog

Unlike the European ones which had snapped conrods, this one had a broken ringland, and the conrods were fine.

It really sounds like the Sniper tuning solution is far from perfect, and the aussie-built XEDE is a better solution for now.

CoffeeBoss · Postby **CoffeeBoss** » Tue Aug 04, 2009 11:21 am

Well, it seems all this has lead to Cosworth themselves doing a lot of back pedaling and 'unadvertising' on their website!

http://www.cosworthusa.com/store/pc/vie ... roduct=363

Cosworth USA wrote:System requirements:
-Installation time 12-14 hours depending on skill level.
-A lap top (PC) along with basic computer skills is required for ECU re-flash.
-Must use at least premium 91 octane (R+M)/2 fuel.
Precautions:
The Cosworth MX5 Supercharger system is currently available for vehicles sold only in North America. Using this product on vehicles sold in other regions is not recommended.
-Not for use on vehicles with automatic transmissions
-For off-road racing use only.
-Do not drive at sustained high speeds. Engine damage may occur.
-Not for sale or use on pollution controlled motor vehicles sold in the state of California.
-Excessive boost pressure will cause engine failure.
-Repeated activation of the RPM limited will cause engine damage.
-The car should be dríven by shifting the transmission below 6500 RPMs.
-Your car must be equipped with an oil cooler. Do not install the supercharger kit unless your car has an oil cooler. Engine damage will occur.
-Cosworth Supercharger kits are designed for engines in good mechanical condition only. Installation on high mileage or damaged engines is not recommended and may result in engine failure, in which we are not responsible. Cosworth is not responsible for the engine or consequential damages.
-Superchargers add tremendous stress and wear to your engine and may cause engine failure or damage. Cosworth is not responsible for engine, vehicle or any other subsequent damage.
-If you are considering purchasing this system and have questions, please contact Cosworth at sales@cosworth.com

Haha! So, hey everyone, we've developed a factory-style performance enhancement for your NC. Oh, one thing though, don't use the extra performance in case it goes bang. Which it might. In fact, probably best if you drive it like, not as hard as when you didn't have the supercharger in there. Annd only on race tracks, of course.

Seems to me they should have sorted out the tuning in-house and charged more for the 'kit'. Have a reliable base upgrade that people can then fettle with if they don't mind the risk.

As seen on Russ' GT Roadster Blog:
http://gt-roadster.blogspot.com/2009/07 ... ising.html

moo moo nel · Postby **moo moo nel** » Fri Aug 07, 2009 2:44 am

what a joke

CoffeeBoss · Postby **CoffeeBoss** » Tue Sep 08, 2009 8:13 pm

zombie wrote:It really sounds like the Sniper tuning solution is far from perfect, and the aussie-built XEDE is a better solution for now.

From the reading i have been doing on Miata.net, this is very much the case.

Of course, you have to wade through pages and pages and pages of 'oh, this is what you get' and 'this is riduculous, i can't believe Cosworth is blah blah' and 'it's there fault' and 'turbochargers are better' and 'no there not' and 'what would you know' and so on. It's rather amusing. Particularly when most of the trolling is between people who have read about these mods, and those who have done them.

Anyhow, the main debate seems to centre around Corky Bell (who is on those forums) and BEGI, who have i think 3 or 4 customer's with their turbo kit on the NC. They are using the XEDE and having no issues whatsoever. Then there is the Cosworth crowd, claiming that Cosworth's stuff is better then BEGI, and the problem there exists with the Sniper/Delta Force tune, but then there's also those saying that the Sniper/Delta product is still better than the XEDE...

However Corky and the gang seem to be the only ones making reliable horsepower out of the LFVE engine in the NC using the simple principals of good, safe tuning. From reading those forums, the turbo cars currently come out in front. But even by their estimation it is still somewhat early days for forced induction in the NC. Mainly on account of the fact that neither XEDE nor Delta Force have completly opened up all the parameters in the factory ECU.

There are also a couple of aftermarket ECU options in Japan, it turns out, but they are also very limited in scope - remove speed limiter (doesn't exist on export cars anyhow), raise revs by 500rpm.

Still, as THIS LINK shows, the basics of the LFVE engine are sound - if you've got the money and expertise, 800hp is possible

Moto · Postby **Moto** » Wed Sep 16, 2009 10:15 am

So is it not possible to run a full aftermarket computer on the NC? Do they have to be a piggyback?

Postby **orx626** » Wed Sep 16, 2009 10:31 am

Moto wrote:So is it not possible to run a full aftermarket computer on the NC? Do they have to be a piggyback?

You can, but you will lose your ABS, DSC, immobiliser....as the ECU needs to talk to the other control modules via a CAN BUS circuit. That is why piggyback units are the go. Some people are getting close to cracking the standard ECU code to allow reprogramming without losing the standard functionality.

Cheers,
Danny

CoffeeBoss · Postby **CoffeeBoss** » Wed Sep 16, 2009 11:30 am

orx626 wrote:You can, but you will lose your ABS, DSC, immobiliser....as the ECU needs to talk to the other control modules via a CAN BUS circuit. That is why piggyback units are the go. Some people are getting close to cracking the standard ECU code to allow reprogramming without losing the standard functionality.

Yes, there is a fascinating thread on this on Miata.net, most of which concerns the inner workings of Mazda's software which goes straight over my head.

Chris/MX5 Racing tells me that the ECU/control units for dash and engine in the NC are unique to each car. In otherwords, if your engine ECU dies, you'll need to replace the dash ECU as well. He carries complete looms as spares so he can swap all the computers over if he has an issue in one of his NCs.

Madness!

Postby **orx626** » Wed Sep 16, 2009 2:43 pm

CoffeeBoss wrote:
orx626 wrote:You can, but you will lose your ABS, DSC, immobiliser....as the ECU needs to talk to the other control modules via a CAN BUS circuit. That is why piggyback units are the go. Some people are getting close to cracking the standard ECU code to allow reprogramming without losing the standard functionality.

Yes, there is a fascinating thread on this on Miata.net, most of which concerns the inner workings of Mazda's software which goes straight over my head.

Chris/MX5 Racing tells me that the ECU/control units for dash and engine in the NC are unique to each car. In otherwords, if your engine ECU dies, you'll need to replace the dash ECU as well. He carries complete looms as spares so he can swap all the computers over if he has an issue in one of his NCs.

Madness!

Chris is correct...yes all items on the CAN BUS network are "paired" to each other and all are programmed to be unique. Mazda replicated the RX-8 system when they designed the NC.

Cheers,
Danny