Quiet 3" free flow exhaust
14 January 2015, 03:53 PM
#31
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14 January 2015, 03:57 PM
#32
Go do your work and lets see the 380
I dont think David at API told you that did he?
14 January 2015, 04:08 PM
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14 January 2015, 04:18 PM
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Not at all... a mapper will map to the best of the engines ability! you might get 'more' out of a crap mapper wanting to give you big figures, but driveability and longevity wont be up to much..
Go do your work and lets see the 380 I dont think David at API told you that did he?
Go do your work and lets see the 380
I dont think David at API told you that did he?
14 January 2015, 04:54 PM
#36
Hi, no API did not tell me that, it was a couple of people on the forum that advised they got 380 from standard turbo, i might just leave the car as it is at the moment as it runs really well, maybe when i do decide to upgrade to 380 bhp i will look at the varioua turbos available.
First rule of Subaru facebook pages, every classic has 280bbp 'red top engine' and every Impreza gains 200bhp by using a dump valve.
14 January 2015, 05:00 PM
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No it was not Facebook that told me that lol , it was a couple of members on this forum. Anyway I think im going to leave it as it is for the time being.
14 January 2015, 07:31 PM
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I have a Miltek 3'' resonated decat turbo back and it's loud!
But I've put a custom 3'' twin resonated centre in it and it's made it perfect. Lovely deep burble and not overly loud.
But I've put a custom 3'' twin resonated centre in it and it's made it perfect. Lovely deep burble and not overly loud.
16 January 2015, 08:46 AM
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16 January 2015, 08:51 AM
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Oh I see, I have had both cats removed and replaced with a 3 inch that goes down to 2.5 inch decat pipe. The rest of the exhaust is the standard 2.5 inch STI exhaust, so will changing my STI 2.5 inch exhaust to a "performance" 2.5 inch exhaust make any difference in performance if it's the same suze?
16 January 2015, 05:38 PM
#48
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Mahle 4032 pistons
Steel rods
Acl end and main bearings
Arp head stud kit
Upgraded head gaskets
Oil pick up pipe
Api upgraded oil pump
Tgv delete's
Ngk IlFR7H
Hks panel filter
Swrd 290 fuel pump
Swrd 3 port boost solenoid
Miiltek 3'' decat turbo back
Bob Rawle ecutek map 1.5bar
16 January 2015, 06:44 PM
#49
Nice, did that have the 2.5 engine?
This was my custom made Longlife Exhaust system on my hawk STi, I thought it was quite, but having a custom exhaust you can tell them how loud/quite you want it, as they can add more silencers etc!!!
Subaru Impreza WRX STi longlife exhaust system - YouTube
Subaru Impreza WRX STi longlife exhaust system - YouTube
16 January 2015, 11:39 PM
#50
Oh I see, I have had both cats removed and replaced with a 3 inch that goes down to 2.5 inch decat pipe. The rest of the exhaust is the standard 2.5 inch STI exhaust, so will changing my STI 2.5 inch exhaust to a "performance" 2.5 inch exhaust make any difference in performance if it's the same suze?
Few companies making exhaust which has tapering to 2.5" or center pipe will meet 2.5" DP
Difference between the performance 2.5" and OEM shouldn't be,but this depends on makers,stock Prodrive box is bit restrictive above 350bhp,I've seen few guys struggled get pass on Prodrive backbox 350bhp on normal fuel
Plus depends on how many extra resonators this exhaust have etc.but I've see on few 2.5" awesome results(beyond 400bhp),we are made on 2.25" exhaust 382bhp(that's not on Subaru though,but on Honda EP3 Type R)
Same is with 3" exhaust,we are run few of them and best has been in therm of power Buddyclub Spec IV which is very noisy,but on this exhaust we are made highest power and Revolution which has been OK too,but still has made less power than with Buddyclub
We are run too HKS exhaust which in our case has been proven at numerous bhp levels
Hope this help
Thanks,Jura
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