4200 exhaust sound - spec or GS? Views pls before I have to make a decision….

Gazcw

Member
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3,764
Just following up on this thread. Someone has suggested I buy some standard backboxes from ebay, ask Jaren to refurbish them and remove a bit of the internal wadding to get a sound that doesn't have the drone and the loudness would sit between the standard and the GS exhaust which would probably be fine for me (and not silly money). What do people think?
My QP has Jaren boxes too. No drone at all.
 

erlac89

New Member
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2
This video says that the GS boxes are a good upgrade for the 4200 but he only shows his custom setup with some modified Larini mufflers. He also says the drone mostly comes from the headers. You can buy little vacuum actuator kits really cheaply, and then you can choose to open it when you want from a fob, it is a pretty common upgrade on muscle cars.

 

FIFTY

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2,536
I wonder how many accounts have been created with a single post containing one of Lambertius' videos.
 

MattWill

New Member
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19
Thanks erlc89. Great vid…I even understood a tiny bit of it! I spoke to Jason at Jaren who was great. Think I’m going for his refurbed/modified standard 4200 back boxes.

But the vid raised another question - Euro 3 vs Euro 4 compliant. Under new London ULEZ requirements (I think) Euro 4 cars don’t pay to enter while Euro 3 cars do. 2005 4200 Masers pay the charge but 2006 don’t (again, I think). It’s not for me but does this mean Maser changed the header design between these years and, theoretically, is it possible to change & so comply? Just out of interest.
 

safrane

Member
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If you did make the changes you would still have to get the car tested and its compliance updated via the DVLA... all at cost.
 

2b1ask1

Centenary Club
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17,705
My GS is listed as Euro 3 despite being Euro 4 spec as Maserati it seems didn’t supply the correct information at the time if registration. That said, a recent check on TFL said it was exempt so maybe Maserati have now updated DVLA.
 

Twinspark

Member
Messages
377
Thanks erlc89. Great vid…I even understood a tiny bit of it! I spoke to Jason at Jaren who was great. Think I’m going for his refurbed/modified standard 4200 back boxes.

But the vid raised another question - Euro 3 vs Euro 4 compliant. Under new London ULEZ requirements (I think) Euro 4 cars don’t pay to enter while Euro 3 cars do. 2005 4200 Masers pay the charge but 2006 don’t (again, I think). It’s not for me but does this mean Maser changed the header design between these years and, theoretically, is it possible to change & so comply? Just out of interest.
Yes the headers were changed, euro 4 headers have the cat integrated in them. Euro 3 do not and it is the better overall design, many convert their Euro 4 to 3 but not the other way around.
 

Delmonte

Member
Messages
677
Hi Matt. It was me you spoke to on the bay lol. Anyway just to reiterate mostly what others on here have said. I'd go Jaren route if I was you, whether GS or standard. My Jaren /GS setup doesn't drone except at idle, and valves open. Close the valves and it goes. But interestingly once on the move, you cannot tell if valves open or not... And there's no drone with either, to my ears. NOTE I also have a X pipe fitted as well.

There's also no noticeable power difference with valves open or closed (I have the key fob switch).

If u do want the standard boxes... PM me on here rather than buying off bay... I'll give you a better price
 

BennyD

Sea Urchin Pate
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14,217
To the OP; when I first fitted modified GS boxes to my spyder, I put a button under the steering column shroud to manually open the valves. However, I found that if I left them closed and accelerated hard, the valves would open automatically as the vacuum escaped back into the inlet manifold (I’ve since fitted a one way valve in the line so that doesn’t happen any more). Under normal use with a bit of acceleration and a bit of overrun, the vacuum kept the valves closed so you don’t really need a Larini remote open/close switch. Best you fit the GS vacuum tank as its bigger than the one fitted to the 4200. It’ll cost about £80 to rig up a switch if you buy the vacuum solenoid and vacuum tank new.
 

FIFTY

Member
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2,536
@BennyD I run mine with the standard tank and it's fine... It only runs out of vacuum if I am messing with the switch then it might take 30 seconds for the valves to close up again - I see no drama with that.
 

BennyD

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For the sake of £20 or so, I’d rather be able to open and close the valves at will.
 

BennyD

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What Jag have you got Ian ?
Your collection keeps on growing :)
How's the projects coming on cars and bikes ?
It‘s a stage 2 F Type R cab pushing out about 625bhp. It’s a very surprising and capable car, I just did a 320 mile round trip to see Dem and the guys at the pub and, with the roof down and air con on, it averaged 36.8mpg. On track it was doing about 4. 0-60 in about 3 seconds and a top end of about 200. Sadly, the TTRS had to go as it was cheaper than the wife to get rid of. The GS750 is just waiting for a silencer to be rechromed, the GT750 engine is going away next week for a full rebuild including crank seals. The GPz550 is very nearly done and the Chevette is going away next month for a full respray. The Jensen Healey and Quattro will be on ice until next year. Lots to do and plenty of time to do it!
 

philw696

Moderator
Staff member
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16,128
Fairplay Ian the F type sounds exciting and you have certainly cracked on with the projects love it.
 

Vampyrebat

Member
Messages
2,548
It‘s a stage 2 F Type R cab pushing out about 625bhp. It’s a very surprising and capable car, I just did a 320 mile round trip to see Dem and the guys at the pub and, with the roof down and air con on, it averaged 36.8mpg. On track it was doing about 4. 0-60 in about 3 seconds and a top end of about 200. Sadly, the TTRS had to go as it was cheaper than the wife to get rid of. The GS750 is just waiting for a silencer to be rechromed, the GT750 engine is going away next week for a full rebuild including crank seals. The GPz550 is very nearly done and the Chevette is going away next month for a full respray. The Jensen Healey and Quattro will be on ice until next year. Lots to do and plenty of time to do it!
I think the F Type is one of the best (if not best) contemporary cars on the road today in both FHC and cab guises!