MD321S Turbo with Ex Standard manifold
#1
Scooby Regular
Thread Starter
iTrader: (8)
Join Date: Dec 2009
Posts: 783
Likes: 0
Received 0 Likes
on
0 Posts
MD321S Turbo with Ex Standard manifold
Just brought a MD321S turbo and i am going to fit once i actually get a chance, but i have a question, i have a standard exhaust manifold on the car, i have fitted injectors (unknown cc but Simon said they are over 550cc) decat up and down pipe, downpipe is 3" with 3" center section which reduces to 2.5" as i wanted the prodrive back box and Walbro fuel pump forged engine etc...
My question is will this be ok to run with the MD321S?
Or is it not safe to run that turbo with stock exhaust manifold. I want around the 450BHP mark. Is this possible on my setup with stock manifold?
Anybody know what the stock manifolds are good for?
My question is will this be ok to run with the MD321S?
Or is it not safe to run that turbo with stock exhaust manifold. I want around the 450BHP mark. Is this possible on my setup with stock manifold?
Anybody know what the stock manifolds are good for?
#4
Scooby Regular
Thread Starter
iTrader: (8)
Join Date: Dec 2009
Posts: 783
Likes: 0
Received 0 Likes
on
0 Posts
They were sold to me as 550cc but when Simon mapped the car he said there were bigger than 550cc.. So fingers crossed I suppose.
Last edited by Tyler 1; 20 August 2013 at 12:23 AM.
#5
Scooby Regular
iTrader: (7)
Hi Tyler
MD321S can be laggy on yours,S is more suited for 2.5L and not sure if this turbo can be converted to Billet,speak with Mark@Lateral Performance about the conversion
About the headers they should be OKish for 400-450bhp,above 400bhp I would go with 2/3 bolt headers like are RCM,Lateral Performance etc
Jura
MD321S can be laggy on yours,S is more suited for 2.5L and not sure if this turbo can be converted to Billet,speak with Mark@Lateral Performance about the conversion
About the headers they should be OKish for 400-450bhp,above 400bhp I would go with 2/3 bolt headers like are RCM,Lateral Performance etc
Jura
#6
Scooby Regular
Thread Starter
iTrader: (8)
Join Date: Dec 2009
Posts: 783
Likes: 0
Received 0 Likes
on
0 Posts
Hi Tyler
MD321S can be laggy on yours,S is more suited for 2.5L and not sure if this turbo can be converted to Billet,speak with Mark@Lateral Performance about the conversion
About the headers they should be OKish for 400-450bhp,above 400bhp I would go with 2/3 bolt headers like are RCM,Lateral Performance etc
Jura
MD321S can be laggy on yours,S is more suited for 2.5L and not sure if this turbo can be converted to Billet,speak with Mark@Lateral Performance about the conversion
About the headers they should be OKish for 400-450bhp,above 400bhp I would go with 2/3 bolt headers like are RCM,Lateral Performance etc
Jura
Trending Topics
#8
Scooby Regular
Thread Starter
iTrader: (8)
Join Date: Dec 2009
Posts: 783
Likes: 0
Received 0 Likes
on
0 Posts
Ow yeah I forgot they had AVCS.. I'm running v3 sti heads. When I spoke to Simon he reckoned that I should be on full boost at 4200rpm... Just don't know whether to go ahead and do this now.. :-(
#9
Scooby Regular
iTrader: (7)
Hi Tyler
I'm pretty sure you should be OK,but not sure if you will able to make 450bhp
2.5" exhaust can be restrictive and yes some guys has run 2.5" at 450bhp without the issue,but usually people swapping 2.5" exhaust for 3.0"
Standard headers at this level,not sure,hard to say,seen only few cars has run them at this level,but usually on OE Twin scroll headers which flow enough above 500bhp
Tubular headers or any good aftermarket headers can be best bet at this level,but I've seen few guys run ported headers at 450bhp without the issue,some has been unable to make above 400bhp
Jura
I'm pretty sure you should be OK,but not sure if you will able to make 450bhp
2.5" exhaust can be restrictive and yes some guys has run 2.5" at 450bhp without the issue,but usually people swapping 2.5" exhaust for 3.0"
Standard headers at this level,not sure,hard to say,seen only few cars has run them at this level,but usually on OE Twin scroll headers which flow enough above 500bhp
Tubular headers or any good aftermarket headers can be best bet at this level,but I've seen few guys run ported headers at 450bhp without the issue,some has been unable to make above 400bhp
Jura
#12
Scooby Regular
Thread Starter
iTrader: (8)
Join Date: Dec 2009
Posts: 783
Likes: 0
Received 0 Likes
on
0 Posts
If i changed the Exhaust manifold and back box i would like to think so, if the injectors dont max out, but knowing my luck they will anyway. But as i am not changing the back box and manifold have no idea what i will get.
Thread
Thread Starter
Forum
Replies
Last Post
Scott@ScoobySpares
Full Cars Breaking For Spares
61
11 January 2021 03:08 PM
Scott@ScoobySpares
Full Cars Breaking For Spares
55
05 August 2018 07:02 AM
Scott@ScoobySpares
Full Cars Breaking For Spares
7
14 December 2015 08:16 AM