BMC CDA fitted - V Happy!! - Alfa Romeo Forum
You are currently unregistered, register for more features.    
Tuning & Upgrades Discuss performance enhancements for your Alfa Romeo

 
Thread Tools
(Post Link) post #1 of 15 Old 06-10-08 Thread Starter
Status: is a state, condition or situation
AO Silver Member
 
Pea Sea's Avatar
 
Join Date: May 2007
Location: United Kingdom
County: North Yorkshire
Posts: 2,638
BMC CDA fitted - V Happy!!

So, I fitted a BMC CDA to my 156. Not because I'm a boy racer but because she'd been stuttering at low revs when pulling away and I'd noticed that cleaning the throttle body had improved things so I wondered whether she was suffering from poor mixture/air throughput etc. I'm no mechanic but I like to spend time tinkering with my bella. The outcome after fitting the CDA is a marked improvement. I'm not saying it's fixed the problem completely but there is a significant improvement.

What's more, I've also noticed that my fuel consumption has improved slightly - instead of 430 miles to a tank the last two trips to Doncaster and back (a regular trip every week) I got 460 and 475 respectively. And there's more - she seems to be using slightly less oil. Over 1000 miles, I used to have to top the engine oil up from around the half way mark on the dip stick, whereas this time it was roughly 3/4 way up the dip stick after 1000 miles. Early days I know, and I accept that my 'measurements' are not an exact science but could there be a technical reason for the fuel economy and less oil usage?

Up shot is, I quite like the occasional grunt the CDA gives, driven normally round town you'd never notice it is there, but give her some welly and there's a definite low end growl. Cant say the performance is greatly improved though - but that's fine - that's not what I was after.

Fitting the CDA was pretty much a doddle. Secret is to remove the battery and tray for easy access from above. One question though - I've seen several pictures of the JTS with a CDA fitted where the MAF is moved from the air box end of the induction tube, and re-located next to the throttle body intake. I've tried it in both locations and I can find no difference in performance, other than when it's located next to the throttle body the revs rise to 1500 for 10-15 seconds and then drop down to the normal 1000, whereas when located on the CDA end it starts up and sits at 1000. This is only from cold though, From hot she sits at 1000 when started regardless of where the MAF is located.

I've kept the original induction parts just in case though. I never know - if I ever sell her the new owner may not be to chuffed with the CDA


Avoid the Calamari

It sucks...

Pea Sea is offline  
Sponsored Links
Advertisement
 
Status: Busy busy busy!
Club Member
Membro Premio
 
Pud237's Avatar
 
Club Member Number: 71
Join Date: Apr 2006
Location: United Kingdom
County: Cumbria
Posts: 44,807
Re: BMC CDA fitted - V Happy!!

Keep the CDA when you sell it, and sell it seperately on here.

I'm glad you're happy with it, I'm very happy with mine. I don't think it will account for the drop in oil consumption though..
Pud237 is online now  
0of0
Status: - Update
Guest
 
Posts: n/a
Re: BMC CDA fitted - V Happy!!

I love the induction noise mine makes - my original airbox was sh*gged anyhoo & came across my CDA on ebay (un-used)
 
Status: -
AO Member
 
Lepi's Avatar
 
Join Date: Aug 2007
Location: Croatia
County: -
Posts: 127

Member car:

GT

Re: BMC CDA fitted - V Happy!!

I fitted BMC CDA 2 days ago. I am really satisfied

I fitted it at same place where original airbox was fitted and i didn put aditional pipe to get air direct to filter because 1.6 ts engine has no engine guard plastic. i think car`s getting enough cold air.

is anyone driving without that aditional pipe?
Lepi is offline  
Status: I've just finished running the coast to coast!
AO Member
 
lofty102's Avatar
 
Join Date: Jul 2008
Location: seaham
Posts: 150

Member car:

Megane Sport 225

Re: BMC CDA fitted - V Happy!!

Any Idea why the BMC web site says that BMC CDA are not intended for use on the publc highway?
lofty102 is offline  
Status: Waiting for Stelvio QV
AO Platinum Member
 
OperationAlfa's Avatar
 
Join Date: May 2007
Location: United Kingdom
County: Essex
Posts: 23,452
Re: BMC CDA fitted - V Happy!!

Quote:
Originally Posted by lofty102 View Post
Any Idea why the BMC web site says that BMC CDA are not intended for use on the publc highway?
Because they are developed for track use.
OperationAlfa is offline  
Status: -
 
Join Date: Mar 2007
Posts: 4,522
Re: BMC CDA fitted - V Happy!!

How are you getting that many miles to a tank
G5een is offline  
Status: Waiting for Stelvio QV
AO Platinum Member
 
OperationAlfa's Avatar
 
Join Date: May 2007
Location: United Kingdom
County: Essex
Posts: 23,452
Re: BMC CDA fitted - V Happy!!

Quote:
Originally Posted by Lepi View Post
I fitted BMC CDA 2 days ago. I am really satisfied

I fitted it at same place where original airbox was fitted and i didn put aditional pipe to get air direct to filter because 1.6 ts engine has no engine guard plastic. i think car`s getting enough cold air.

is anyone driving without that aditional pipe?
Just don't drive through any big puddles will you.
OperationAlfa is offline  
(Post Link) post #9 of 15 Old 06-10-08 Thread Starter
Status: is a state, condition or situation
AO Silver Member
 
Pea Sea's Avatar
 
Join Date: May 2007
Location: United Kingdom
County: North Yorkshire
Posts: 2,638
Re: BMC CDA fitted - V Happy!!

Quote:
Originally Posted by G5een View Post
How are you getting that many miles to a tank
Not sure - but I am.

Filled up last night (£62) and drove to manchester and back today (240) miles and the needle is half way between half and 3/4's now. That said the ligth comes on when the needles halfway between empty and 1/4 so I reckon I easily get to Doncaster and back tomorrow which is 180 mile round trip and I'll still have a little bit left
Pea Sea is offline  
Status: -
AO Member
 
Lepi's Avatar
 
Join Date: Aug 2007
Location: Croatia
County: -
Posts: 127

Member car:

GT

Re: BMC CDA fitted - V Happy!!

Quote:
Originally Posted by OperationAlfa View Post
Just don't drive through any big puddles will you.
I know, thanx though
Lepi is offline  
Status: Busy busy busy!
Club Member
Membro Premio
 
Pud237's Avatar
 
Club Member Number: 71
Join Date: Apr 2006
Location: United Kingdom
County: Cumbria
Posts: 44,807
Re: BMC CDA fitted - V Happy!!

Quote:
Originally Posted by Lepi View Post
is anyone driving without that aditional pipe?
Yes I am, its fine

Quote:
Originally Posted by lofty102 View Post
Any Idea why the BMC web site says that BMC CDA are not intended for use on the publc highway?
I think thats because they don't have TUV approval, or something like that..
Pud237 is online now  
Status: -
 
Join Date: Mar 2007
Posts: 4,522
Re: BMC CDA fitted - V Happy!!

Quote:
Originally Posted by Pea Sea View Post
Not sure - but I am.

Filled up last night (£62) and drove to manchester and back today (240) miles and the needle is half way between half and 3/4's now. That said the ligth comes on when the needles halfway between empty and 1/4 so I reckon I easily get to Doncaster and back tomorrow which is 180 mile round trip and I'll still have a little bit left
Fair play to you. You must go easy on her.
G5een is offline  
(Post Link) post #13 of 15 Old 07-10-08 Thread Starter
Status: is a state, condition or situation
AO Silver Member
 
Pea Sea's Avatar
 
Join Date: May 2007
Location: United Kingdom
County: North Yorkshire
Posts: 2,638
Re: BMC CDA fitted - V Happy!!

Anyone any thoughts on the location of the MAF???

I'm still a little worried about whether I have it in the right place or not
Pea Sea is offline  
Status: Busy busy busy!
Club Member
Membro Premio
 
Pud237's Avatar
 
Club Member Number: 71
Join Date: Apr 2006
Location: United Kingdom
County: Cumbria
Posts: 44,807
Re: BMC CDA fitted - V Happy!!

Quote:
Originally Posted by Pea Sea View Post
Anyone any thoughts on the location of the MAF???

I'm still a little worried about whether I have it in the right place or not
I've had mine in two places, just above the CDA, which is the 'natural' placement, and just after the flexi section prior to the throttle body. Its in the latter now, because it suits the pipework better, but I don't think it makes any difference.
Pud237 is online now  
(Post Link) post #15 of 15 Old 10-10-08 Thread Starter
Status: is a state, condition or situation
AO Silver Member
 
Pea Sea's Avatar
 
Join Date: May 2007
Location: United Kingdom
County: North Yorkshire
Posts: 2,638
Re: BMC CDA fitted - V Happy!!

Quote:
Originally Posted by Pud237 View Post
I've had mine in two places, just above the CDA, which is the 'natural' placement, and just after the flexi section prior to the throttle body. Its in the latter now, because it suits the pipework better, but I don't think it makes any difference.
Cheers Pud - that puts my mind at rest somewhat. It also makes mounting the CDA easy too IMO.

Must admit - sounds great. I came back over some Pass or other from Manchester to NE yesterday evening - luckly there were few lorries around so I got a chance to 'open her up' Great sound.
Pea Sea is offline  
Reply

Go Back   Alfa Romeo Forum > Supported Alfa Romeo Models > Technical & Vehicle Assistance > Tuning & Upgrades

Tags
bmc , cda , fitted , happy

Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

 
For the best viewing experience please update your browser to Google Chrome