VR6 - exhaust silencers and cams and remap question

[matth76 1]

Hi

Please can anyone help me...I have a 1997 OBD2 golf vr6. My car currently has a high flow cat, Milltek cat back 2.25" exhaust. BMC cold air induction kit, and a more free flowing 6 branch exhaust manifold and a remap. On the last rolling road it had 192bhp and 193 lb/ft torque. I have just recently had some Eurospec 268 cams fitted. The car feels stronger but it's hard to tell how much power (if any) has been gained. I am soon to get a remap tweak to get the fuelling spot on plus rolling road session. Is it likely that the remap itself will get slightly more power from the cams (than say if I left the car as it is with just the cams and no remap)?

I am getting the remap done as I want the fuelling to be correct with no pinking... however I was just wondering if I would get even more power as a bonus. If so what sort of gains can I expect to achieve (with just the cams on their own, and then after the remap)?

Ok, second question... is it a good or bad thing to remove the middle exhaust silencer? Would this drastically reduce backpressure and make it undrivable, or would more power / torque be gained (with a remap tweak too)? I'm definitely keeping the back box/silencer, but wondered about the remaining middle silencer and whether it is benefitial to remove this or not? As already mentioned I have a high flow cat too already. I'm not sure if there are one or two middle silencers plus the backbox on the Milltek system.

Thanks for any help or information.

Matt

[Russ_vr6 12]

you should gain power with a remap mate,il give u an example a mate of mine has a clio williams,he bought some piper cams and as he a techician he fitted them himself and times it up to std

now the car felt sronger but was v cammy and he couldnt tell if it was any quicker

then he took it up to hill power and had it set up,and wow the difference was night and day,because of the improved map from the remap the cams improved the car and took the quater mile time from 14.9 @ 95mph down to 14.4 @ 98mph and it made 180bhp on the dyno too

not saying it will make urs super faster matey but i pretty confident u will notice the difference

[matth76 1]

Cheers mate. Would you know if a Milltek system has two mufflers/silencers in the middle section of exhaust (plus the backbox)? I've been told on the vwvortex forum that some good gains can be had by removing the muffler just before the backbox. However not sure if this is the case on the Milltek. Does anyone know?

Cheers

Matt

[jb9999 0]

The box before the back box is the big square one that loops over the rear axle mate. You probably would get some gains but the exhaust will be a lot noisier.

[spindat45 0]

My Miltek system has 2 boxes. I think removing the middle box (in front of the rear beam) could make the noise in your car a bit unbearable. Also the drop in back pressure will probaly lose you power so I wouldn't. If you did make any gains these would probaly be outweighed by the fact that you may have to wear ear plugs when driving

[matth76 1]

Thanks guys for your replies.

Eat This on here has a straight through exhaust, no cat no silencers. After a remap his car got 178bhp at the wheels! Some people on the vwvortex forum have said removing one of the mufflers/silencers will liberate a lot of power. Has anyone else on here got any comments or info?

Cheers for any help.

[DundeeDub 0]

you may get higher bhp but will prob loose out on torque, and torque is what you really want, not bhp

[Eat this 2]

i understand what ur sating about losing torque but every1 whos driven mine agrees with me its never gutless it pulls from tickover makes peak torque of 175 lb ft at the wheels at 4500 rpm it also holds it better higher up the revs than stock (due to cams) it does drone on choke especially at 2k rpm but when its warmed up its not too loud and sounds feckin awesome when u stretch its legs it also sounds sweet as a nut when cruising especially below 2k rpm and on motorways at 3k rpm ( imagine a scooby crossed with a v6)