110bhp out of a VTR

[vtrlad]

Hi there.

How much would it cost / is it possible to get 110bhp out of a MK2 VTR without spending too much money.

I am aware that the VTR isn't as easily tuneable as the VTS but 110bhp using the torque stats calculator bring the 0-100 and 0-60 down a bit.

Any ideas what's the best bet to get this goal?

[Davidp]

Wouldn't cost that much if it's the 98 bhp version...

Manifold, decat, exhaust and an induction would maybe give 107ish...

[Marshy]

I know VTR_Nick has got 117bhp out of his MK2 VTR, with a 4-1 decat manifold and green filter

[Davidp]

lol! I doubt he has that much with just those mods...

[don55]

unless it fully mapped

[Scattle]

Dyno may be a bit Generous for that hike in power, David has got it Spot on.

[leeds106]

gmc 4-1
magnex pugsport
filter with a decent cold air feed


my vtr engine ran 113-115 on 3 different RR's over the space of 2 1/2 years


its very 1st outing at FCS 06 saw it killing every vtr it came across in a straight line and keeping pace or just edging over s2 rallyes with same mods



some engines make more power than what citroen say they made




also dont forget the 8v's were massivly restricted compaired to the 16's from factory
the cold air feed for one has a very restrictive pipe that goes really thin at one point
the manifold is shittly designed


the 16v has a nice large air pipe right through and the manifold is practically a 4-1 as standard

[vtrlad]

In terms of air filters are the green's still the best or BMC?

I like the sound of Magnex exhaust, i'd rather have something quiet than a big booming exhaust.

Are we talking straight through or cat back?

[leeds106]

any filter with a good cold air supply will work fine tbh


and a catback system wont give as much a gain as a decat system

[vtrlad]

So if I decatted it, how would I get it to pass it's MOT.

What sort of gains are you looking at with a decat?

[leeds106]

wont pass an mot no


although tbh if yours is the 98bhp engine if you fit a manifold that will remove the cat as the cat is in the manifold in the 98bhp versions

so you would have to refit your standard manifold for the mot

[vtrlad]

Is that difficult to do?

I've fitted exhausts and that before but not manifolds lol.

[leeds106]

yeah there not too hard to do


just make sure you fit new manifold bolts when you fit it and it will go on and come off fine cos the standard ones get old and rusty

[brianS]

i love fly wheel figures.

[leeds106]

love em all you want i have yet to find a single vtr thats not running bodies or boost thats ever kept pace in a straight line so im inclinde to think its making a decent amount of power increase

[vtrlad]

Why are 4-1 manifolds more expensive than 4-2-1?

[jaybiss]

Its not all about BHP, what about torque?

Try stripping the car too, free to do aswell.

[leeds106]

torque rules


mine hit 101lbs at 2000rpm and holds it all the way to 5700rpm peaking at 109lbs at 5000rpm

[vtrlad]

How do you increase torque?

I thought a decat and full system would have increased torque?

[leeds106]

most mods will increase the toque along with bhp