In future please title your thread according to the forum rules you agreed to when you joined :thumbsup Been done for you this time

 

sorry about that buddy thanks for changing it for me

 

You could try get in contact with alpina527 as he does BBTB's for the 328 so he may know more about this for you :thumbsup

 

alpina527 does do a bbtb kit for the 318iS mate which is the way i would go. PM him mate as he is the guru :yes
The other options are;

1. If your handy with engineering skills, the 3.0ltr M3 throttle bodies can be modified to fit the 318iS, unsure about the M44, but can definitely be done on the M42 by deleting the middle two throttle bodies and modifying the mountings. Not easy and not cheap.

2. Fit a dbilas seperate throttle body kit..... VVVVV expensive though

 

Thanks for your reply guys i will have to pm Alpina

 

I would of thought the throttle bodies on a m42 and m44 would be same. What are the performance gains from a big bore throttle body

 

I'd be interested in this, if possible on the m44 . Can anybody throw any light on it ?

 

i think something along the lines of 5bhp!!

don be expecting much, i am hoping to get some for my IS when everything from my house is sorted,

think it just feels a lot perkier and responsive,

and its quite cheap 120 quid then send your old 1s back to alpina,

theres induction kits out there 4 200 saying 10bhp and i seriously doubt they do, so its worth the money for the BBTB!!

 

anybody got any pictures of the modified TB ?

 

as far as i am aware its the exact same just slightly bigger to allow more air am sure its just sum1 else standard TB and been bored slightly larger!!

but pm alpina and he should have something

 

not sure how you could bore the standard one, it has twin butterflies and is tear shaped.

would like to see what the larger on IS like

 

same here i am in process of saving up to buy these from alpina just got more important things, but if i get them soon i will post pics etc!!

for 120 bucks say 5bhp you cant complain

 

i rang alpina yday and he seems to know what he's on about. so im going to get one from him as his done loads and it's good quality from what i've heard and its good value aswell :thumbsup

 

Hello mate,

Have you got any news on this?

IF SO...

• Have you got it on now?
• Any power increase?
• Feel any different?
• Fitting it - was it easy or not?
• Last but not least a PICTURE?????

Cheers Mate!!!!

 

I have one on my iS (pictures in my thread, there are plenty) and it made a huge difference, the whole rev range was cleared up and the car pulled a lot better. It's by far one of the best mods I have done to the car so far. And dead easy to fit, pretty much plug in and play

Only issue I had was the rev's started bouncing all over the shop and thus in my frustration hoofed it down the road and then it sorted it's self out after that. :silly