when does it become necessary to use a wideband and a 3bar map sensor? thankyou.

 

You should start usig a wideband O2 sensor when you swap to any after market ECU.

As for the 3 Bar map sensor, swap to this when running more than 15 psi.

Dan

 

thanks mate.

 

A wideband O2 sensor and display is a tuning tool. Like any other tool, some people like it, and some don't. Therefore, there is no particular point at which a wideband O2 sensor is needed. If you just want to monitor your engine while driving, then an inexpensive narrowband O2 sensor and display will work just fine. In my opinion, you don't need a wideband O2 sensor because:
1) If you are asking this question, then you are obviously not a tuner.
2) Your tuner should have his own O2 sensor and display if he likes using them.
3) If your tuner is trying to get you to buy his equipment for him, then you need to find another tuner.

MAP (Manifold Absolute Pressure) = ambient pressure + boost pressure. Your ambient pressure will depend on the altitude and barometric presssure where you drive your car. The actual range of a given MAP sensor depends on which brand it is, but here is the basic rule of thumb:

1 Bar sensor = Non-turbo engine
2 Bar sensor = Boost up to 15psi / 100kPa / 1Bar
3 Bar sensor = Boost up to 30psi / 200kPa / 2Bar

Whether or not you need to upgrade the MAP sensor also depends on what is currently installed in your EMS (Engine Management System). You can use a higher pressure MAP sensor (assuming the EMS is able to accept it) when running lower boost, but the load band resolution will not be as good, especially if the EMS does not have a load band recalibration function.

 

thats nicely explained, thanks.

 

Evil, the issue we have here in the UK is that there is not that many tuners that map engines.

The rotary scene here in the UK is very young, and we are still learning a great deal about building and mapping of these cars.

Dan

 

Given the UK's long racing history, I find that difficult to believe. I think you need to get out more.

Engine tuning since 1975, specializes in rotary engines:
http://www.hurley-engineering.ltd.uk/

Specializing in EFI:

Haltech:

D.E.M.S (Digital Engine Management Systems)
Small Dole/ West Sussex
Gary Passingham
077 3081 3455
www.gtart.co.uk

Jabba Sport Limited
Crowland/ Nr Petersborough
Brian Schlewitz
1733 211 779
www.jabbasport.com

Wolf:

Company: Centauri GB Ltd
Contact: Andrew Dearing
Address: 1 Fairfields Hastings Road
Cinderford, Gloucestershire
GL14 2AH
Phone: 01594 823152 / Mobile 07734 309995
Fax: 01594 823152
E-mail: enquiries@centauriae.co.uk
Website: www.centauriae.co.uk

Link:

15-17 Link Way, Ham, Richmond, Surry TW107Q, United Kingdom
Tel +44+208-332 7534
http://www.brdevelopments.co.uk/

Motec:

UK/Europe

MoTeC Europe Ltd
Peter Jackson
Unit 14, Twyford Mill Industrial Estate
Oxford Rd, Adderbury, Nr Banbury
Oxon, UK OX17 3HJ
United Kingdom
Tel: 44 8700 119 100
Fax: 44 8700 111 922
Email: peter.jackson@moteceurope.co.uk
Internet: www.moteceurope.co.uk


BERKS

R M Engineering
Ralph Meeham, DASH & ECU's
Unit 4, Lambwood Hill Ind Est
Grazeley
Reading
Berks
RG7 1JN
Tel: 0118 988 8555
Fax: 0118 988 8767
E-mail: info@rotechniks.co.uk


CHESHIRE

Neinmeister
Colin Belton, DASH & ECU's
Unit 23, Bank Quay Trading Estate
Warington
Cheshire
WA1 1PJ
Tel: 07000 930 930 or 01925 242342
Fax: 01925 417638
E-mail: colin@neinmeister.com


ESSEX

D C Electronics
David Cunliffe, DASH & ECU's
Unit 5E, West Station Yard
Spital Road
Maldon
Essex
CM9 6TR
Tel: 01621 856451
Fax: 01621 842237
E-mail: david@dcelectronics.demon.co.uk

Gloucestershire

Powerstation
Richard Benton, DASH & ECU's
Athelney Way
Battledown Ind Est
Cheltenham
Huntingdon
GL52 6RT
Tel: 01242 238400
Fax: 01242 233838
E-mail: office@powerstation.org.uk
Internet: www.powerstation.org.uk

M Tech
Ben Morris - Motorbike/Powerboat - DASH & ECU's
The Garden House
Cold Aston
Cheltenham
GL54 3BJ
Tel: 01451 822458
Fax: 01451 822942
E-mail: ben.morris@m-techautomotive.co.uk
Internet: www.m-techautomotive.co.uk

KENT

G Tech Motorsport
Will Gollop, DASH & ECU's
Canterbury Industrial Park
Hersden
Kent
CT34 4HQ
Tel: 01227 710987
Fax: 01227 711772
E-mail: Gtech@freeuk.com


LEICESTER

Graham Goode's
Graham Goode, ECU's
Lutterworth Road
Aylestone
Leicester
LE2 8PH
Tel: 0116 244 0080
Fax: 0116 244 0140
E-mail: sales@grahamgoode.com
Internet: www.grahamgoode.com


LONDON

Dataspares Acquisition Ltd
Andrew Smith, DASH
61 Paragon Place
Blackheath
London
SE3 0SP
Tel 0208 355 9347
Fax 0208 244 3647
E-mail: info@dataspares.com or andrew@dataspares.com


NORTHANTS

Startline UK
John Kirby, ECU's
18 Lancaster Close
Woolaston
Northamptonshire
NN27 7PD
Tel: 01933 665 752
Fax: 01933 665 753
E-mail: sales@startline.org.uk
Internet: www.startline.org.uk


OXFORDSHIRE

MacKellar Racing
Fraser MacKellar, DASH & ECU's
Factory 1, Shenington Airfield,
Shenington
Nr Banbury
Oxon
OX15 6NZ
Tel & Fax: 01295 680633
E-mail: dfraser.mackellar@virgin.net

Joules Electronics
Robert Jewells, DASH & ECU's
45 Arundel Close
Kings Sutton
Banbury
Oxon
OX17 3QZ
Tel & Fax: 01295 814950
E-mail: info@joules-electronics.com

Autosportif
Martin Spurrell, DASH & ECU's
Unit 4, Murdock Road
Bicester
Oxon
OX26 4PP
Tel: 01869 250555
Fax: 01869 250650
E-mail: sales@autosportif.co.uk


SURREY

B R Developments
Branko Bozic, ECU's
17 Link Way
Ham
Richmond
Surrey
TW10 7QT
Tel: 0208 3327534
Fax: 0208 948 4250


THIRSK

Darell Staniforth Motorsport
Darell Staniforth, DASH & ECU's
Unit 11, Thirsk Industrial Park
York Road
Thirsk
YO7 3BX
Tel & Fax: 01845 523859

MSR Motorsport
Mark Robson, ECU's
Chapel Street
Thirsk
North Yorkshire
YO7 1LU
Tel & Fax: 01845 525287


WALES

Humphrey & Foulkes
Dave Humphreys, ECU's
Lion Works
Pool Road
Newtown Powys
SY16 3AG
Tel: 01686 628144
Fax: 01686 622192


WEST MIDLANDS

Co Ord Sport Ltd
Peter Collinson, DASH & ECU's
King Street
Dudley
West Midlands
DY2 8PX
Tel: 01384 216 102
Fax: 01384 216 109
E-mail: sales@coordsport.com
Internet: www.coordsport.co.uk


WILTSHIRE

Swindon Racing Engines
Eric Pasture, ECU's
Crampton Road
Greenbridge Estate
Swindon
Wiltshire
SN3 3JJ
Tel: 01793 531 321
Fax: 01793 528 484
E-mail: guyr@swindon-engines.com

Dialynx Performance Ltd
Mr Keith Murray
Unit 3, Bagbury Park
Lydiard Millicent
Swindon
SN5 3LW
Tel: 01793 772245
Fax: 01793 772273
E-mail: dialynx@dialynx.co.uk


WORCS

Tim Mason
Tim Mason, DASH & ECU's
Portway
Norbury HIll
Inkberrow
Worcestershire
WR7 4HA
Tel: 01386 793 225
Fax: 01386 793 060
E-mail: tmason20@aol.com

 

OK, here goes.....

ECU / Reason:

Haltech / Both Jabba and DEMS will supply, but have no experience of rotary engines, and do not want to try and map our engines.

Wolf / No one uses them over here.

Link / I trust Bob Rawle of BRD to tune my Impreza, but he has never tuned a Rotary. I know him well as he was the one that fitted my Link ECU originally.

Motec / Powerstation are the only company listed that have seen rotary engines. Again I know these guys well because of my many years with the Impreza, but I wouldnt have them map my engine (not saying any more). BRD = see Link. G-Tech only want to map on a bench dyno. There is a new company that has the Motec tie up call ReWorx, they know rotary engines well, but the mapping knowledge is young.

We also have Pectel ECUs which are up in the Motec league of ECUs. They offer all the goodies of the Motec M800, but quite a bit cheaper.

Dan

 

and keith murray is vw/audi only.

 

Get a PFC man. It's very easy and any guy who tunes any EMS shall tune it right. In Cyprus we've got the same problem that's why most of us put PFC.

It's not rocket science anyway.

You may also wanna buy some 3mm ceramic apex seals if you are not sure, they can widthstand more detonation

 

No need for a wide-band, unless you want the last 5% - 10% of power over reliability.


-Ted

 

Is there a narrow band O2 sensor on the car as standard? If so, how can I plug into it for a display? If not, do I just stick one in the tailpipe?

Basically, I want to check I'm not running lean at any point.

Thanks...