Lude Generation

Hi all sorry another question, I gave my inlet mani and TB to be bored out to 65mm but he's just told me he can only do around the butterfly valve so it will be tappered from 62-65mm, is this normal? Or is there anyway around it? Thanks.

If you bore out a TB then you can only taper it up to the butterfly as you'd obviously have a gap all round the butterfly if you bored it all out. You'd otherwise have to get a custom larger butterfly and possibly adapt the pin/axle as well. In the long run it'd be easier/cheaper to buy a larger TB. Then you can port match the ATR inlet to suit. There's still a maximum diameter you can go though. About 68mm is safe.

Thanks mate you're a star! So if I was going to buy an after market throttle body, which size would be best 68mm and then ask him to bore the inlet to it?

Yeah, I wouldn't recommend going larger than 68mm. Providing you're going for a decent engine management then 68mm would be fine. You're obviously uprating your bottom end as well, so it will all tie in nicely

And so yeah, get him to port match the inlet manifold to suit the 68mm TB. I assume you'll wait until you can give him both items?

Yeah I'd give hm both bits and I'm going to a p28 ecu.

with Hondata S300?

I'm not too clued up on all that tbh, I've heard of chrome and hondata but didn't know what was best and it sort if depends on price a little.

Unless you're going standalone ECU (big bucks) Hondata S300 is the next best thing. Pretty much allows you to tune everything you need it to. A P28 on it's own won't do what you want. It'll just have a standard map for a B?? engine, but the Hondata will open it up and allow it to run an H22 and be tuned for your best needs.

P28 is from the d series p30 is the b series just letting you know

Either way, your going to need decent engine management to tie it all in together to make it work