Vauxhall Owners Forum banner

Astra Mk4 engine mods

4K views 8 replies 2 participants last post by  saxman69 
#1 ·
What things can i buy for a MK 4 Astra that'll slightly improve performance speed wise.

I can only afford the 1.6 16v SXI (better than the 1.4 thought!)

Would love the 1.8 but money money money is hard to find!

Looking for small mods for under £200 ish ;)
 
#4 ·
The catalyst is like a big filter filtering out some of the harmfull exhaust
gases. Due to the construction of it, gases are forced through it creating a
back pressure. The de-cat pipe de-resticts the exhaust system so that you allow
the gasses to pass out more quickly.

You'll need to refit it for the MOT though as it's not strictly legal. But it'll give you a
bit of a boost in performance.
 
#7 ·
i read somewhere that back pressure can increase low end torque. as in initial acceleration. i may have just imagined it though!! lmao i do that alot.

I had a dreem that Bin Laden had bombed a nuclear power plant in England. Coz the radio was on when i woke up, i was convinced i had heard it on the news. I went to work in a panic, and was really confused why no one else knew!! I took about 3 days to realise! I'm a f**kin loon at times!!

Anyway, how much would a de-cat kit cost, inc fitting etc?
 
This is an older thread, you may not receive a response, and could be reviving an old thread. Please consider creating a new thread.
Top