matt_aka_smiler
Member
Registered: 7th Dec 05
Location: Stoke-on-Trent Drives: MK4 Astra GSi Turbo
User status: Offline
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hi, im in two minds wether to get a 4-2-1 manifold or a 4-1. i want to know which is best and which make to go for. cheers 
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csweatherston
Member
Registered: 16th Jan 06
Location: Devon
User status: Offline
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4-2-1 anyday, my 4-1 is a complete waste of time
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AK
Member
Registered: 5th Jul 00
Location: Aberdeen City
User status: Offline
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why do you say that?
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Dave A
USER UNDER INVESTIGATION - DO NOT TRADE
Registered: 10th Dec 03
Location: County Durham
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hes guessing AK.
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csweatherston
Member
Registered: 16th Jan 06
Location: Devon
User status: Offline
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quote:
Originally posted by AK
why do you say that?
my 4-1 (protech) make no noticable power increase, and sounds tinny as fak  ...
apparently, 4-2-1 give better midrange torque, which is what most people are aiming for
quote:
Originally posted by Dave A
hes guessing AK.
....im getting the feeling you are trying to make me look silly in every post i make, hmmmm
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Dave A
USER UNDER INVESTIGATION - DO NOT TRADE
Registered: 10th Dec 03
Location: County Durham
User status: Offline
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what are you on about? not trying trying to make anyone look silly.
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Dave A
USER UNDER INVESTIGATION - DO NOT TRADE
Registered: 10th Dec 03
Location: County Durham
User status: Offline
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the 'guessing' comment was because you say that getting a 4-2-1 is much better than buying a 4-1. this is not the case, depends on what you want from the engine and what it will be used for. also, how can you say your 4-1 manifold is a waste of time? have you fitted it to look nice or give performance gains? if its the latter then how do you know its a waste of time unless you get before and after dyno runs?
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James R
Member
Registered: 4th Feb 03
Location: 205GTi16/306GTi16
User status: Offline
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either shoudl be an improvement over the std header set up.
I personally prefer a correctly lengthed 4-1 as its simpler to make right, and for 16v engines where midrange is none-existant, it's all about 5-8k.
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