F22 a4 header???is it better?

[La rata]

Well I been hearing That the a4 header of a 90-91 ex are better than the
f22a1 stock header n it increase horse power?? Dose it make a differnce?
and I luckly found one in a junkyard but just asking dose it make a differnce n it is better than buying a expensive header On eBay? , I'm not trying to spend much but if I have to than I have to...

[La rata]

Well I been hearing That the a4 header of a 90-91 ex are better than the
f22a1 stock header n it increase horse power?? Dose it make a differnce?
and I luckly found one in a junkyard but just asking dose it make a differnce n it is better than buying a expensive header On eBay? , I'm not trying to spend much but if I have to than I have to...

By Tha way my accord is a lx...

[TypeG]

yes, it is better. i couldn't tell you how much gains you'll get, but you will get gains. you should probably get the downpipe also. later.

[La rata]

yes, it is better. i couldn't tell you how much gains you'll get, but you will get gains. you should probably get the downpipe also. later.

Thanks man...

[Juan4DCB7]

yes, it is better. i couldn't tell you how much gains you'll get, but you will get gains. you should probably get the downpipe also. later.

x2 on the downpipe, and it would get you gains but i do not know if it is noticeable.

I was about to get one but the JY was closing and those thing are a PITA to get off.lol

[JoshM]

A4 header is a tubular design. The A1 and A6 are both cast manifolds. So, yes, The A4 will flow better.


And "whoohoo!", another TN CB'er.

[dicksonrd]

Its not too noticable but it helps.

[deevergote]

The F22A1 and F22A4 are 100% identical in every aspect other than the exhaust manifold. There is a 5hp difference between the two engines. Therefore, the F22A4 should give somewhere near 5hp. The gains may be a bit less due to the age and condition of your engine.

[AbsurdNY]

Deev could some of that 5 HP also come from the exhaust system? I know my 90 EX has a different exhaust with bigger piping and dual tip muffler. I'm not sure if any models that come with a A1 have the exhaust that EX's come with. Is the exhaust system even classified under a engine part?

[carpet47]

I have the a4 and yea man compared to any other cb that Ive been in there is a lil bit of a difference between the accel its kinda like a baby Vtec but SOOO not a Vtec but, its noticable.

[deevergote]

Deev could some of that 5 HP also come from the exhaust system? I know my 90 EX has a different exhaust with bigger piping and dual tip muffler. I'm not sure if any models that come with a A1 have the exhaust that EX's come with. Is the exhaust system even classified under a engine part?

Sorry Mike, I just saw this.
I don't believe the piping is any larger... I could be wrong, though. The muffler has a dual outlet, but I don't know if that makes any difference in power. I suppose it's possible, but the majority of the difference is most certainly in the manifold.

Also, the F22A6 manifold, although it is cast, is still a much better design than the f22A1 manifold. There is no evidence that says the F22A4 manifold will outflow the F22A6 manifold. It MIGHT, but if it does, it won't be a 5hp gain.

I have the a4 and yea man compared to any other cb that Ive been in there is a lil bit of a difference between the accel its kinda like a baby Vtec but SOOO not a Vtec but, its noticable.

VTEC has to do with a change in cam lobe profile. Having an exhaust manifold that flows more freely is pretty unrelated.