2slicc

Hi HT,

I need help on deciding if a 3" turbo back exhaust is needed for my setup.

Current setup:

B18b
Drag 3 turbo kit
Hondata s300 with boost by gear (1st-2nd 8.5lbs & 11lbs for 3rd-5th)
660 injectors
2.5 down pipe running second external 60mm waste gate for open DP to factory type R exhaust
Walbro 255

285 whp - 177tq on dyno jet.

My turbo is the Turbonetics .57 trim included in the Drag kit

I don't start building boost until about 3200 rpm and full boost about 4700rpm.

Will going to a 3" DP and 3" full turbo back exhaust help with spool and get me to full boost faster ?

I tried to search but most are either mildly built or seriously built motor and the data does not pertain to me ( i could be wrong)

I have a chance to buy a full 3" DP and Thermal R&D 3" turbo exhaust for $300 in perfect shape. the setup has a high flow 3" cat included ( I am running catless right now)

Will this $300 help me in any way since i am basically running open DP with the 60mm waste gate opening @ 2lbs of boost in my current setup?

Thanks for the time and advice in advance.

Eddie

justYncredible

iTrader: (1)

What is the current size you have now?
If I'm not mistaken, if you go to a larger size youll have to get a retune to utilize that increased size

TheShodan

iTrader: (14)

Ya don't even have to retune. Yes. It works. Relieves backpressure and increases power a lot more than the same thing on NA.

2slicc

right now now DP is 2.5" with a Y pipe connected to a 60mm wastegate that opens @ 2lbs the rest is connected to a USDM Factory ITR exhaust.

2slicc

Great News !

Thanks for reply !