b18c Sir motor: have a 2.5 exhaust all the way, should i change to 2.25 ?

[dekhere]

currently running a 2.5 stainless steel b-pipe and vision muffler, should i change to a 2.25 pipping all the way? want something that not to pricy or if anyone know someone that wants to swap =] and i also have mugen headers

[dougie_504]

Hell no.

Keep your 2.5"

Why would you want to downgrade and make less power?

[dekhere]

its feels abit slow cause before it had a 2.25 exhaust and was tuned.. does this mean i need a re-tune ?

[1900-hustler]

prob placebo

what else is done to the car?

might not be worthwhile to do a tune just yet unless your not planning to do any further modifcations

[dekhere]

I'm planning to tune it after I get a itb? You reckon its worth it

[1900-hustler]

the tune or itb?

should definately get the tune done after itb

but is the itb worth it?

personally for me its not but its your car so thats your call :D

[dekhere]

It's my car but I like advice =] how come you don't reckon it worth it ? What you reckon I should do before I go for a retune right now all I got is a mugen air box mugen headers and 2.5 vision exhaust all the way and high flow cat

[stndrd]

What computer are you running?

If you're running a Apexi VAFC or Neo, you won't be able to tune for itb's

[dekhere]

Hondata s200

[u mad?]

don't downgrade to 2.25

wait until you have all the shit that you want and on your car THEN get it tuned.

[1900-hustler]

It's my car but I like advice =] how come you don't reckon it worth it ? What you reckon I should do before I go for a retune right now all I got is a mugen air box mugen headers and 2.5 vision exhaust all the way and high flow cat

i just dont think the money spent on ITBs vs the power gained is worth it
but it does sound fcukn insane lol

if your set in ITBs just get them and then tune the beast!

itll be a waste to tune then get ITBs cos you have to tune again

nomsayin

[u mad?]

It's my car but I like advice =] how come you don't reckon it worth it ? What you reckon I should do before I go for a retune right now all I got is a mugen air box mugen headers and 2.5 vision exhaust all the way and high flow cat


Hondata s200



some nice parts already, if you wanna go faster its ganna get very expensive for the money you put in.

next step would be cams + valve train upgrade and a 4.9 fd.


wait i just realised its not a c7. do you sill have the standard intake mani and throttle body?

what about your gearbox?

[u mad?]

some nice parts already, if you wanna go faster its ganna get very expensive for the money you put in.

next step would be cams + valve train upgrade and a 4.9 fd.


wait i just realised its not a c7. do you sill have the standard intake mani and throttle body?

what about your gearbox?

lol not really what the op asked about.

my 2c anyway

[1900-hustler]

goot advice brah

depends of OP wants to open his engine though

also could look into clutch/flywheel too if that hasnt been upgraded already

[dekhere]

i just dont think the money spent on ITBs vs the power gained is worth it
but it does sound fcukn insane lol

if your set in ITBs just get them and then tune the beast!

itll be a waste to tune then get ITBs cos you have to tune again

nomsayin

Yeah I was planning to tune it after I get the itb but I don't know what size tb would b good. Any suggestions

[dekhere]

goot advice brah

depends of OP wants to open his engine though

also could look into clutch/flywheel too if that hasnt been upgraded already

Yeah I'm looking into buying the stage one exedy

[dekhere]

some nice parts already, if you wanna go faster its ganna get very expensive for the money you put in.

next step would be cams + valve train upgrade and a 4.9 fd.


wait i just realised its not a c7. do you sill have the standard intake mani and throttle body?

what about your gearbox?

I got the normal intake and throttle but I have the s80 LSD gearbox

[u mad?]

don't bother with itb's

so expensive

so little return unless you have at least cams plus head work ( ideally you'd want a higher cr as well)


upgrade IM and TB, cam it and retune

probably similar price to itb's but you'll see better gains (on your setup at least).


should see 130-140 atw.

top it off with a 4.9fd and you should have a nice b series setup.

[dekhere]

I can get Im and tb but cams are so pricy =[ lolz

[u mad?]

I can get Im and tb but cams are so pricy =[ lolz

how much do you think itb's with install and tunning is?

[dougie_504]

Put a B20 block in, you'll notice the power then, or stroke your current one to 2L+

According to Adrian ITB's are best used in conjunction with good cams + higher comp.

Otherwise if money isn't your problem then do some head work. Cam shafts/gears, springs/retainers, port work, shave the head a bit to ^ comp.

[u mad?]

Put a B20 block in, you'll notice the power then, or stroke your current one to 2L+

According to Adrian ITB's are best used in conjunction with good cams + higher comp.

Otherwise if money isn't your problem then do some head work. Cam shafts/gears, springs/retainers, port work, shave the head a bit to ^ comp.

if money isn't a problem go k series lol! (bet people are sick of hearing this now lmzo)

[dougie_504]

^

That, and some stupid people like me just love the B-series lol. K-series is a pig. B-series just looks so... beautiful :)

[u mad?]

^

That, and some stupid people like me just love the B-series lol. K-series is a pig. B-series just looks so... beautiful :)

you serious? i reckon the b series look ugly. only selling point is the sound lol.


and how how is k serious a pig lol? its refined and mature like fine, expensive wine and aged cheese. a gentleman's engine, wtf am i typing



woops, wayyyyyy off topic

[mocchi]

i think he meant as in pulls like a pig, lotta grunt kinda shit

change to 2.25? depends on intake/gbock

[stndrd]

you serious? i reckon the b series look ugly. only selling point is the sound lol.


and how how is k serious a pig lol? its refined and mature like fine, expensive wine and aged cheese. a gentleman's engine, wtf am i typing



woops, wayyyyyy off topic


BAHAHAHA funniest way I have ever heard a K series being described.


Back on topic tho. My B18C2 has 4-2-1 headers with stock intake manifold & throttle body, with a 2.25in exhaust and runs quite well. If you already have a 2.5in, don't bother downsizing, as others have mentioned, if you are going to be opening up the engine and letting it breath better, the 2.5in will net higher power gains

[dougie_504]

i think he meant as in pulls like a pig, lotta grunt kinda shit

change to 2.25? depends on intake/gbock


No I mean it's fugly like that girl who got asked to dance last of the lot. I mean I don't like the H-series either but they're on par with K's IMO. B's and D's just so sexy.


On the other hand if he goes K-series 2.5" exhaust would be the smallest he'd want, so atm it's probably the best option for him. Biggest sensible for B, smallest sensible for K. That's why I love a 2.5" (exhaust) :)

[DC5FTW]

My exp is 2.5"inch before and the result good, Bad point was always Pull over by cops.......

[pe45678]

2.5 is should better