"What can I say about this exhaust system, purchased the complete exhaust for an M535i, took about 5 hrs to install total, sound well you have to hear it to believe it. The sound at idle is like rolling-thunder in the distance and very simlilar to a Jensen SP I had many years ago and that was a larger V8 7.2litre engine. The sound is just pure magic above 2k Rpm from the engine bay.
 
Fuel economy has increased I say 12% better on motorway crusing and no difference in driving style, but with the extra power the engine produces not just horse power but torque at bottom end, well its just screaming to be raced. So do expect to see the mpg going in the opposite direction.
 
This exhaust system should of been installed when they built the cars back in the early 80's period."
 
James Hackett

"First of all, the increase in power is instantly recognizable. Nice pick up through all gears and very eager. The increase in driveability is definitely worthwhile. I think fuel consumption is a bit better, but that is still something I am monitoring. However the car did develop some subtle
flat spots so the mixtures were reset.

I think I will take up your offer and visit you for a proper tune on the rolling road! I will be in touch."

Matei

"Took the car to Quindanning last weekend which is about a 350km round trip. The difference in the way it drives is absolutely amazing. I can’t believe the difference some bits of bent pipe downwind of where all the action actually takes place makes. It starts easier, runs cooler, uses about l5% less fuel, revs like a sewing machine is slightly quieter and surprising makes the car much easier to drive. The power delivery is much less peaky than before such that a smooth progress up through the gears is much easier to accomplish without drivelines shunt and snatching.  It 's such a profound improvement that if you didn't know any better you’d think the-old engine had been removed and tossed in a bin somewhere and replaced with the v12 out of a brand new Aston Martin Vanquish. I t is seriously* that* good!"

“The fact that it's so much ,easier and smoother to drive + the huge reduction in fuel consumption makes the whole drama of buying them in the UK and getting them back here well and truly worth it! Even the substantial cost to buy & have them fitted now seems insignificant compared to the benefit they give the car. I’ve made a lot of improvements to the car over the years, but these pipes are without question the biggest and best improvement hands down!”

Dean Parker,  Australia

EXHAUST MANIFOLDS AND SYSTEMS

Allow your engine to breath, protect your expensively modified, or stock head, from splitting, whilst adding horse power to your project.

Hand crafted in Devon, our stainless steel exhaust systems and multi-branch manifolds, offer performance gains, longevity, and low maintenance for Classic B.M.W. owners.

Superior silencer construction and greatly improved gas flow rates to around 29% above standard, result in considerable increases in both power and torque. Fuel economy may be improved by as much as 10% overall, with the installation of this equipment.

Working Example:-

E28 M535I 1986 (12 valve M30 engine, 5 speed manual gearbox) 115k mileage

Engine in good condition, retaining good compressions on all cylinders, compatible with mileage as indicated. No oil smoke on start-up or over-run, all fluid levels checked and found to be normal and on the marks. Vehicle mounted on rolling road and run up as for power run test

Result :- 207 bhp at the fly wheel

Vehicle taken from rolling road and the stock exhaust system removed, being replaced with Fritz’s complete system including six branch manifold and appropriate silencer boxes as supplied. Vehicle remounted on test equipment and re-run in identical conditions, on the same test program as the previous session.

Result:- 229 bhp at the fly wheel

No intermediate adjustments were executed, or tuning carried out on the vehicle, between these tests, so that the resultant gain in horse power (22bhp) can only be attributed to the installation of the exhaust system.

The installation of a gas flowed system will enhance the application of other components. For example, a fast road camshaft, fitted into an E30 2.5 engine will result in an increase of approx. 14 to 18 bhp. With the Fritz’s manifold and system fitted, a further 10bhp may be realised without further work. The systems carry a life time guarantee, allowing peace of mind for even the most demanding driver.  For further information, please phone.