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Absolutely worth doing, no need for CNC, die grinder (Inc apptoriate burrs and sand rolls), and some blue. Jobs a good un.

What is the overall intake length with that set-up above?

Argggh I didn't know it was your birthday mate!!! As said, chin up, keep at it it'll be reet. You have pm

PM Paul at RSTuning Jon, im sure he'll help you out.

They are in Yiewsley, West Drayton.

JMS are in West London, they'll sort you out. PM Tom@JMS on here

Has to be both sections to get the full benefit.

Yeah but have you seen my 4pots? They are close ratio 4pots.

Probably, we got on well. Keep an eye out on the notice boards, I'll have some posters up soon :p

What's their names Dan?

Where did you study mate? I was at Swansea uni 2001-2004, studying motorsport engineering BEng. been trading for about 4.5/5 years.

what about people who run rallycars and prefer the weight reduction of mild over s/s?

I said you can only change 5th, the rest are fixed as it's a one piece integrated input shaft.

I can only comment on the inlets I personally supply to customers/companies I deal with. The always see a good gain....circa 10bhp is the norm. Yup remap is ideally required, like I said, gains are always seen without.

They aren't just bored out at all. Well, saying that, if you are only experiencing 5bhp from them then doesn't sound to good of a job, and they may have been hacked to death. They don't need a remap to see a very noticeable gain.

^ exactly. I made my own :p

Yes, it's been answered, it depends on the cam spec, you havnt given details of this, so how do you expect a more definitive answer??

Sorry pal, not many people are going to go to the effort of googling them for you, so if you want help, put the cam spec up. Plus, If c&b sell them for this engine, and they only list one camshaft spec for this engine, would this not suggest as a camshaft manufacturer they recomend the use...

yes Catcams manufacture them. depends on the spec of the cams really....wilder ones you tend to ditch the vvt and have fixed lift@tdc.

Spend time getting crank oil clearances, squish, piston ring end gaps and the like correct and you'll have a strong engine.

Take it to a decent machine shop, get it plateau honed on a proper boring bar. Head skimming and block decking are a must really, again a machine shop will do this. Though you're not going to see anything substantial on the Cr front.

Dont see any being mentioned here though? The options discussed in this thread are proven. That was my point.

better options in what respect? proof of this?

No, they supply a map file which has been calibrated to generically suit these mods...this is fine...especially given the price difference.

LOL, dont ask, can of worms right here pal....

The £180+vat wasnt including ptfe gaskets sorry Jamie.

cnc'd ones arent any better....head casting variations make it pretty much impossible to get them all c**k on.

What was the rest of the spec Fred?

They can be an arse to remove, and will likely break if you try...destroy them and fit new ones works well! I wouldnt bend them at all, they are likely to crack when straightened even if its not visible, and the last thing you want is one coming apart when the engine is running. Dont see...

£150+vat if you send a set down, £180+vat drive in/drive out. email info@ap-developments.com for more info.