quick question guys i been looking and looking but i need an answer...
stock bottom end b16..... type r head complete....
b16 tranny clutch flywheel ect.ect.
will running open header on race day gain any hp? gain anything? i know there is more wear and tear on the motor but i only want to make 1-2 passes open header to see if my times increase.......
just wondering if anyone has a dyno comparison is running open header worth it! thanks! or even no muffler and just run axle back

 

Try it and find out.

 

w/o a tune, you are only dropping weight (if you remove the exhaust completely)

you are opening it up way more than the ecm is used to. if you have the means to tune it, you will see a difference. allbeit a small one, but it will be different. audibly? it will be fast as hell.

 

cool thanks. and i wasnt planning on dropping the whole exhaust just taking the test pipe out and running it like that. the car is tuned on hondata s200 unit. it was tuned for full exhaust. but it isnt a stock ecu. i will try next time. what about no muffler?

 

i dont think it will make that much of a difference. but you will tell on a dyno.

 

is it safe taking it 9000rpm open header?
and i know u said i wont feel it unless its tuned but it is dyno tunned so hopefully i gain 2-5whp open header i just need 1.5mph more to reach my goal besides the hytech replica i put on. thanks for the replies fellas

 

sounds like your ready to run 9's dude. SICK

 

just messing around with it all motor till it goes back to boost.....

dont have anything good to say gtfo! just simply asking if u can benefit from it at all

 

2 to 5 whp you arent going to get from that and to = 1-1.5mph may be a streatch.

 

And whats your goal???

 

if your motor isn't built for it, why would you want to run it to 9000?

2whp is certainly a stretch let alone 5.