Review - Harrop TVS 1740 Supercharger

[Beedub]

that last video clip was incredible.... and the kit in terms of fitment makes ALL the other kits look like crap...

this is THE most interesting kit on the market for the v8 m3, the noise, the TQ, its just win.

imo 2 turbo's on this car is a great achievement BUT, the price is massive and fitment will be a nightmare and it simply CANT be this clean....

harrop have created a winner here!! i WISH they'd do something for the s54 because id be all over it like a rash.

[DaveDee]

Originally Posted by Beedub

that last video clip was incredible.... and the kit in terms of fitment makes ALL the other kits look like crap...

this is THE most interesting kit on the market for the v8 m3, the noise, the TQ, its just win.

imo 2 turbo's on this car is a great achievement BUT, the price is massive and fitment will be a nightmare and it simply CANT be this clean....

harrop have created a winner here!! i WISH they'd do something for the s54 because id be all over it like a rash.

Thanks for the positive feedback, just the sort of comments that make it worth all the effort for the R&D team and everyone involved in putting a project together..... and yes it is sensational in every aspect

[cityazndan]

ahhh please port this over to the S85!

[SpartanGA]

Any updates or new installs here in the states?

[DaveDee]

Originally Posted by SpartanGA

Any updates or new installs here in the states?

The Harrop kit is very popular in Australia and has done well, never heard of any issues with the system. I'm aware there quite a few selling in USA, and with the exchange rate the way it stands now ( currently our dollar is worth 73 cents US) its a bargain for US Customers. There are Distributors in USA including Mike Benvo (BPM Sport)

There have been no recent changes or updates to the tuning file or hardware that I'm aware of.

[Titan_br]

Power output?

[DaveDee]

Originally Posted by Titan_br

Power output?

Here's the dyno results that are still current

[XIX]

Hi Dave, the car I am currently looking at purchasing had numbers in the mid 400's. Any idea why this might have been so far off your numbers?

It was done by Harrop WA and is on their fb page.

What exhaust do you recommend for this if I am wanting to keep the raspy f1 style?

Thanks

[cplagz]

Originally Posted by XIX

Hi Dave, the car I am currently looking at purchasing had numbers in the mid 400's. Any idea why this might have been so far off your numbers?

It was done by Harrop WA and is on their fb page.

What exhaust do you recommend for this if I am wanting to keep the raspy f1 style?

Thanks

Dyno figures are subjective to a lot of things. The graphs of the car above has an Akra exhaust on it and its a hub dyno, which usually read higher then wheel dyno.

Innotech IPE F1 keeps quite a rasp -

[XIX]

Haha, thanks mate, yes that is an awesome piece of art, bridge too far unfortunately !

[DaveDee]

Originally Posted by XIX

Hi Dave, the car I am currently looking at purchasing had numbers in the mid 400's. Any idea why this might have been so far off your numbers?

It was done by Harrop WA and is on their fb page.

What exhaust do you recommend for this if I am wanting to keep the raspy f1 style?

Thanks

Mine sadly will not give you the raspy sound, it's more the traditional V8, There are some with a sharp raspy sound like IPE even Akra, but both have a very high cost. My favorite (apart from my own ) is the Corsa exahust which will give a raspier tone, is more reasonably priced and has no drone. Paired with the X pipe it sounds really good.. (Clip below)
Another alternative is to keep the stock rear and fit an X pipe which will give a lot more tone but a raspier sound. You will also get good gains to and it's a cheaper solution than a new rear section. The SC kit has quite some whine so even a louder exhaust won't dominate the cabin noise

[XIX]

Thanks Dave, yes I was thinking maybe keeping the rear as is and modifying the mid section. Would a cat plus resonator still be raspy ?

Another random question, is you car engineered ?

I'm not sure if the one I am getting is yet, and if its not I am tossing up whether to get it done or not (obviously before changing the exhaust !)

[DaveDee]

Originally Posted by XIX

Thanks Dave, yes I was thinking maybe keeping the rear as is and modifying the mid section. Would a cat plus resonator still be raspy ?

Another random question, is you car engineered ?

I'm not sure if the one I am getting is yet, and if its not I am tossing up whether to get it done or not (obviously before changing the exhaust !)

The complete X pipe will give a raspier sound than the stock X pipe and more performance. There's more to the X pipe than just a cat and resonator, the design is quite comprehensive and was developed with and without the Harrop SC kit. It replaces the entire OE X pipe. The resonators are designed to reduce drone and balance the system as the primary cats are removed. Many X pipes just use hot dog resonators and are too loud for most and can introduce even more drone. The OE X pipe is designed for emissions and on it's own does little to reduce drone as the OE rear exhaust is so quiet

Not sure what you mean by Engineered? I'm assuming built motor?

[XIX]

Originally Posted by DaveDee

The complete X pipe will give a raspier sound than the stock X pipe and more performance. There's more to the X pipe than just a cat and resonator, the design is quite comprehensive and was developed with and without the Harrop SC kit. It replaces the entire OE X pipe. The resonators are designed to reduce drone and balance the system as the primary cats are removed. Many X pipes just use hot dog resonators and are too loud for most and can introduce even more drone. The OE X pipe is designed for emissions and on it's own does little to reduce drone as the OE rear exhaust is so quiet

Not sure what you mean by Engineered? I'm assuming built motor?

Thanks Dave,

Yes I meant the x pipe, but I wasnt sure does it come with new cats, or does it remove one or both sets ? I am not bother about meeting emisions, but I definately don't want smell, not sure how this system is on that front ?

In regards to engineering I meant relating to vehicle registration ? I know some insurers require it ?

[DaveDee]

Originally Posted by XIX

Thanks Dave,

Yes I meant the x pipe, but I wasnt sure does it come with new cats, or does it remove one or both sets ? I am not bother about meeting emisions, but I definately don't want smell, not sure how this system is on that front ?

In regards to engineering I meant relating to vehicle registration ? I know some insurers require it ?

Yes the Xpipe is fitted with 200CPSI high flow cats and custom resonators. Smell has not been an issue unless you drop to 100 CPSI cats, then it's pronounced. The cats on the OE system are 400 CPSI front and 200 CPSI mid.

Yes mine was had an engineering certificate for both the SC and a separate ones for the Harrop Brake Kit. Some insurers will not accept cars with forced induction, others like Shannons are fine, or NRMA for a daily driver, their only requirement is the car must be capable of being registered, meaning the SC install and everything else must pass otherwise they can cancel your policy and refund the premium if you bend the car or hit someone else.