Has anyone tried the OBX ITBs? I know they are OBX but the thing is they are a very good price, Some guys have used the ITBs on DC2s and EK9s, just gotta make sure you loosen and tighten everything back up to check.

I might give them a try at a later date if I don't boost, I love the sound of ITBs!!!

 

I'd do some research on ITBs first

Mugen888, no I had one a long while back. It's changed hands a few times since.

GE2, I will be happy with a similar power figure to my last one, maybe a bit more 280 bhp is very hard to do, and once you get into the realms of 2.4 strokers, I think reliability is going to be a big issue.

Aj, 4.44 I think. Dixon will be sorting that amongst a few other things.

Highside, I want it around the same as the last one for this coming track season, as it's a lot to even get it that far with how often i'm out the country. Then I will chip away at it over time I think!

PL, hope you are ok??? Hospital???

 

OPen fracture of tib and fib a fortnight ago whilst skiing in Italy. Had the third (and final) op last Friday in Birmingham's QE. Hopefully discharged tomorrow.

 

From what I have read in the past it is very difficult to set the engine management up with ITBs. Don't know if this is easier with an AEM.

Cams can give you around an extra 15bhp but you need to change the valve springs and this is a hell of a job to do.

Weight saving is the way forward .....

 

Depends on how good the engine management is, I'm pretty sure an AEM can handle ITB's. ITB's are no way near as bad as people make out nowadays, a lot of it is down to the tune.

Mark, if your really interested i can ask my mate about mapping ITB's the pitfalls, things to note etc, he specialises in mapping ITB's.

I finished this install off a while back, my mate mapped it, Ohhh the noise.

 

Thanks mate, but for now I won't be going ITBs. Mapping of them isn't a problem, and the AEM can handle them no probs. The power figures just aren't there imo...

 

fair enough.

Would be nice though, and probably getting close to the mase turbo prices .

 

in theory mapping should be easy. just get the mixture right for full throttle, part throttle, idle and the different temperature ranges. the complications come from getting the inlet working correctly with the cam timing etc. ITB's can be made to work easy within mixture parameters. to get ITB's to make power is a whole different ball game.

ITB's have been tried and tested on the S2000 with different makes giving different power outputs. i get critisized all the time for going the route of fitting side draught carbs to a S2000 engine but the more i read the more i think it actually isn't that daft an idea. there seem to be a lot of problems and a lot of work getting ITB's to work to make a S2000 drive like OEM and have a huge bump in power.

i think if i had no worries of a budget then i would opt for eight injectors. four in the usual place for drivability and four way up the inlet tract to take advantage of taking a little longer to mix with the incoming high speed air therefore improving combustion and power. then just play with length , diameter and butterfly position to give best overall power. no point having peak power though if there is nothing below the red line in a heavy car.

another thing i personally would do is leave the standard cams in and just have adjustable cam gears. the standard low cam has one valve opening a lot more than the other to get swirl to occur at low rpm to improve combustion. Toda do adjustable gears as well as a heavduty timing chain. don't know if they are any good as they are expencive so it'll be an expencive experiment. the standard high cams have quite a long duration already so to go with even longer duration would probably need a bump in compression to get the dynamic compression ratio back to where it was.


but it's your money and ideas that'll ultimatly end up in the build and i look forward to seeing how it progresses

 

You know far too much, Bozwell

Might have to pick your brains on cams at some point.

Right.... i've spent the morning under the car and above it, as I got a delivery of some bits. J's manifold (J's powermaker as I like to call it ) the only one to have imo

I jacked the drivers side engine mount up a little bit, and it slipped over the studs nice and easily.

Also bought a J's filter stopper, as I CBA to make my own





I've left the 3" decat on, and will be getting something nice to replace the 3" Asura I have on.

So that's the whole turbo kit removed now, apart from the oil pan... Just got to fit the OEM injectors now, and a temporary filter so I can drive it to my local place so they can do a sump swap for me. I CBA to do that under axle stands either

 

LOL at this thread.

And the famour MB "I'm not modding anything again" quotes of last year.

You are SO fickle LOL.