TUNING PARTS GALLERY
A SHOWCASE FOR OTHER ROVER / LANDROVER / MG TUNING PARTS & ACCESSORIES UPDATED apr 12
If you want to have yours listed please email me.
CONTENTS:
L SERIES DECAT & EXHAUST PARTS in association with Dark Ice Designs and available to buy through us.
INTRODUCTION.
There are few suppliers of diesel tuning parts and even fewer of Rover and MG ones so this page is dedicated to these hard to find parts.
The inclusion of any item does not necessarily mean that I endorse it and I accept no responsibility whatsoever for any claims made by the manufacturer, nor for their service. Unless stated otherwise.
L SERIES PARTS: ROVER 200/400/600/ 25/45, MG ZR/ZS, FREELANDER L SERIES DIESEL (PRE99/00)
Please click on the link to Dark Ice Designs website to make your purchase.
MG
Rover L-series Diesel DECAT pipe
mkII
This decat pipe simply
replaces the existing catalytic converter and gives more BHP, faster turbo spool
up and acceleration and also better MPG!
It is made here in the UK from 2.5" 305 stainless steel tubing and 8mm thick
stainless steel laser cut flanges and comes with all fittings bolts needed and
fitting instructions.
This decat is suitable for the following vehicles using the 2.0L L-series diesel
engines;
Rover 220
Rover 420
Rover 620
Rover 25
Rover 45
MG ZR
MG ZS
Land Rover Freelander
TO BUY CLICK HERE TO GO TO DARK ICE DESIGNS WEBSITE
2012 MOT CHANGES - NO EFFECT ON DECAT PIPE
FITTING APPARENTLY.
"The check for a CAT only applies to petrol engined vehicles which qualify for a
full CAT test. There will be an update to the Inspection Manual in Spring which
will clarify this"
Rebecca, Customer Service Centre, VOSA Operations Directorate, Tel: 0300 123
9000
TO BUY CLICK HERE TO GO TO DARK ICE DESIGNS WEBSITE
MG ROVER 200/25/ZR SILICON DIESEL BOOST HOSES by Roose Motorsports
This
is a set of 3 hoses to replace the existing rubber ones.
Available in various colours:
BLUE, BLACK, RED, ORANGE, LIME GREEN, £165 a set.
Please state on the checkout screen the colour your require.
Other colours are available from Roose at the extra cost of £13.75
The top hose is a common failure as it rubs on the top coolant hose and the lower hose tends to split at the elbow close to the lower intercooler spigot.
MG ROVER 400/45/ZS SILICON DIESEL BOOST HOSES by Roose Motorsports
This is a set of 2 hoses to replace the existing rubber ones.
Available in various colours:
BLUE, BLACK, RED, ORANGE, LIME GREEN, £130 a set.
Please state on the checkout screen the colour your require.
Other colours are available from Roose at the extra cost of £10.83
The top hose is a common failure as it rubs on the top coolant hose and the lower hose tends to split at the elbow close to the lower intercooler spigot.
L SERIES SDI INJECTORS. (sorry we don't sell these - try Ebay or a breakers)
For big power gains these are a must. The standard injectors cannot flow enough fuel and the injection pump is known to fail if you attempt to get over 140bhp on standard injectors. Basically, it cannot produce enough pressure at the higher flows needed and when max'd out, can fail.
So fitting the injectors from an SDI gives the pump an easier time because the they open at a slightly lower pressure and flow more fuel. The lower opening pressure results in them opening sooner and closing later thereby extending the injection duration.
They can be fitted to a standard engine but a Pierburgh maf and Digimafam DGM2 are recommended. Also increase the boost pressure to 20-22psi and fit a better air filter. The 2012 Digimafa has 2 settings especially for use with theses injectors.
Please note, these are not a plug and play mod, you need to make sure the engine is in good condition, the intercooler hoses are in free from splits and holes, the cambelt has been changed, and you have a performance air filter and ideally a better exhaust system.
L SERIES TUNING SUMMARY: (Digimafam not applicable to the 20/400/600 or Freelander)
DIGIMAFAM DGM1, + PIERBURGH MAF
INCREASE THE BOOST PRESSURE (adjust the linkage or fit the BCV featured below)
FIT THE EXHAUST PARTS & INTAKE PIPE & HOSES + INDUCTION KIT
Now you have more air going in and with the exhaust gases having an easier exit, its time to inject lots more fuel so....
FIT SDI INJECTORS (Dgm1 and pierburgh maf should be fitted as well)
REMAP OPTIONAL. The VP30 injection pump is not the most reliable one going and remapping can increase the load on it, whereas sdi injectors reduce the load on it due to having lower opening pressure. The downside can be reduced fuel consumption due to less efficient combustion, however this is the price you pay for 130-140+bhp
UPDATED TUNING GUIDE PDF
BOOST CONTROL VALVE. Available from Gb-Enterprises
An easier way to regulate the boost pressure. Suitable for the L series and BMW engine.
This
is supplied with some free Silicon hose so you can locate it easy reach though
this should be kept as short as possible.
Its easy to fit - just remove the existing tube that connects the compressor outlet to the wastegate actuator. Then connect one piece of tube from the compressor outlet to the valve inlet and the other piece from the valve outlet to the wastegate actuator. A booot gauge is fitted using a tee in the tube to the valve inlet. Keep the silicon tubes as short as possible and reset the wastegate linkage back to the standard setting if its been adjusted.
You also check the boost using a voltmeter as described here:
Or with a code reader plugged into the diagnostic port. Laptop based ones will work with any software that can display sensor data such as Scantool, OBDMaster, Digimoto etc. See the Scangauge below for a neat alternative:
More info here:Scangauge
This module connects to the 15pin diagnostic socket found on vehicles from about 1996*. It attaches to the dash with velcro or double sided adhesive tape and can display data from the engine ecu. The refresh rate is about 5 times per second on non can bus vehicles (most pre 2006/7) so the displays are more accurate when the engine speed is changing slowly - i.e. in the higher gears .(* It automatically scans for the correct protocol and works with all of them)
P
Pressing the button next to each parameter changes it so you can display any 4, including fuel consumption. Pressing the button with the red circle around it brings up the menus. In the left hand photo intake air temp in oF is shown and in the right hand one, LOD = % load. 100% displays as 0 though. TPS is throttle position in %.
On many petrol engined cars from 1996, and all of them from 2001, it can also display and clear fault codes and switch off the engine warning light (MIL). On diesels, this isn't possible unless they are 2004/5 or newer models. (so that rules out most MGRover diesels except a few facelift models, so only the data can be viewed on these) On my X-type it also displayed to 'B' codes - B0000 and B0002.
IAT MEASUREMENTS
On the Jag, it was interesting to see how quickly and by how much the intake air temp increased when I 'put my foot down'. On this engine, as on the later 75 and ZTs, the IAT is in the turbo to manifold hose so it measures the temperature of the compressed air. (On the L series engines and earlier 75 & ZTs, it is in the maf sensor so only measures the temperature of the air as it leaves the air filter)
The temperature was consistently at least 10o F above the outside air temp and then shot up by no less than 60oF under full boost. Clearly any intercooler mods would be be easily detectable.
IF YOU ARE THINKING OF FITTING A BOOST GAUGE...
You might wish to consider one of these instead. At £116 from UKobd.co.uk, it is good value and you should be able to view boost pressure, rpm, mph, coolant temp, intake air temp and possibly maf, ign timing and tps (throttle position sensor) data even on pre 2004 diesels. The data is likely to be more accurate than aftermarket gauges and the car's dash instruments, so you can see how far out your speedo and tacho are! Note that the MPH readout will still only be accurate if your wheels have the same rolling diameter as the factory ones. On my X-type the ScanGauge and the GPS based Racelogic Performance Box** both gave the same mph - showing the speedo to over read by just 1-2mph.
I also found that 10psi boost was produced from as low as 1200rpm, reaching 20psi at just 1500rpm and max boost was 22psi. This shows the effectiveness of the vnt turbo fitted - significant boost is produced from very low rpm which keeps the exhaust clean, emissions low and boosts low down torque. In practice you can feel the turbo kicking in from 1250rpm - about 250-300rpm sooner than on the 75 and L series.
I have had the Scangauge on test for a month and it has worked well and its compact size means it will fit in front of the dash without obscuring the instruments too much. It can be left connected and powers down automatically once the engine is stopped.
I did not test the fuel consumption facility as it needs to be calibrated.
It's certainly easier to fit and potentially more useful than fitting conventional gauges. Recommended!
Thanks to Derek at Ukobd for lending it. ** I reviewed the Racelogic Performance Box here
ADDITIVES TO ENHANCE AND PROTECT YOUR ENGINE AND TRANSMISSION.
Unmodified engines can manage fine without additives assuming they are & have been serviced regularly but when I tune an engine I increase the protection by adding additives to the oil and fuel. Those listed are recommended and used by 'those in the know'.
ZX1 OIL ADDITIVE - it works!. This unique product was developed for use on oil rigs and virtually eliminates friction by impregnating all wearing surfaces. It is NOT an oil treatment but provides lower wear rates than the best synthetic oils and better cold start protection. You can add it all engines, all gearboxes, power steering pumps, even the coolant. It is NOT a ptfe based product so cannot cause gumming.
I've tried it in 3 different engines and the effect is noticeable within a few hours of driving. On my 14year old Citroen Relay camper, starting is almost instant as the engine spins over more quickly and mpg is better - 35mpg pottering around at 40-50mph.
Team-zx1-co.uk Also available from many Halfords branches.
MILLERS DIESEL ECOMAX FUEL ADDITIVE. - it works and pays for itself in fuel savings. Widely available.
Millers oils and additives are very highly regarded by diesel professionals and I've used them for years.
ECOMAX is a fuel additive which cleans and lubricates the fuel system components and boosts the cetane number.
This is a measure of the fuels ignitability which affects a combustion parameter know as ignition lag. Fuels with a low cetane number do not ignite as readily and this causes a delayed ignition and a more sudden and 'explosive' combustion. The effects of this are audible as increased knock, with reduced power, rougher running and worse emissions and economy.
ECOMAX, by boosting the cetane number by 4 points causes the fuel to start burning sooner and more progressively, giving a longer cleaner burn where more of the fuel is converted into the power. The result is improved performance, quieter, smoother running, better economy and reduced emissions.
Fuels that just meet the British Standard such as those sold by supermarkets tend to have the lowest cetane number, whereas Shell Extra and V power, and Bp Ultimate have a higher cetane number. Most of the other major brands aren't much better than supermarket quality fuel in my experience.
Your nearest stockist can be found from Millers website. Millersoils.net
I also recommend their oils - XFD fully synethetic and XFE semi synthetic and both are cheaper than and as good as the big name brand oils.