Ok I was web surfing as usual and came across headers , Hey there is nothing wrong with window shopping LOL . My question is , Which is better 4-1 headers or 4-2-1 headers , What is the difference between the two and which is better if there is a better one of the two . I am still kinda new to the tuning part of imports . Just trying to get a better understanding of it .

 

i THINK 4-1 headers make less low end power and 4-2-1's make more.
also 4-1 headers sit lower so if your car is lowered they might scrape.

 

4-1 has better top end and 4-2-1 has better mid range

 

 

I've also heard the only GOOD 4-2-1 headers are the really expensive spoon and mugen ones. I've been told that your better off with a JDM 4-1 R header.

 

I personally think that the 4-2-1 are better for daily driving. It provides more usable power, unless of course you redline it off of every stop. Both are good though.

 

JDM not CARB approved

 

thanks for the insight

 

id go with 4-2-1 if ur running a D16..ur not going to be running above 4k much..better lower and mid range performance