Exhaust system, will manifold restrict?

[Viper]

Hi guys,

My car has got an Apexi exhaust straight through from the manifold, but the manifold is still standard. Will it be causing any restrictions?

Ta!

Tom

 

[-BigDave-]

Definately a certain amount on a turbo car anyway.

 

[zefside_s15]

While everything else is stock, no it won't

 

[Clarkey]

Even if it does, not worth the hassle with tubular manifolds IMO, they crack all the time even if you get an expensive one.

 

[Auss15]

Only a small amount of spool up time...

 

[pegliobaglio]

It does make a difference for sure , as for them always cracking my stock mani cracked in 3 places and my aftermarket is still going strong after 3+ years ......

 

[spoonman]

Hi guys,

My car has got an Apexi exhaust straight through from the manifold, but the manifold is still standard. Will it be causing any restrictions?

Ta!

Tom

You NA or turbo?

 

[Viper]

It's a turbo

Thanks for the help guys. Did Apexi ever do a manifold? I can't see a mention of one anwhere.

 

[Auss15]

It does make a difference for sure , as for them always cracking my stock mani cracked in 3 places and my aftermarket is still going strong after 3+ years ......

Never had an issue with mine after many track days and 21psi of boost, in fact I know a few guys who went back to stock after cracking stainless mani's several times

It's a turbo

Thanks for the help guys. Did Apexi ever do a manifold? I can't see a mention of one anwhere.

Apexi never made them, Tomei did

 

[pegliobaglio]

Maybe I was just unlucky then and tbh probably the reason I noticed such a big difference when I fitted the new one

 

[Auss15]

What after market are you using, I have been very dubious of AM ones because of their perchance for cracking

 

[pegliobaglio]

Using an HDev atm and have a mazworx topmount to go on in the next couple of months . My HDev was one of the first batch though, I have heard that later batches weren't as good quality wise .

 

[EMAGDNIM]

On my last SR20 engine I had run a stock manifold till I replaced it for a Tomei, and then a HKS. Neither aftermarket manifolds had cracked on me. I have heard that it could happen (and I've seen it first hand), but I wouldn't really sweat it in the grand scheme of things while dealing with modifying cars. Wear and tear is part of the game.

 

[fez06]

My stock manifold cracked too, iv got an Hdev one and its been mint lad had it before me too no cracks etc