My Car is a 4 Cylinder 138 HP stock as listed per specs...could be underestimated or not [it does happen] anyways..I have a highflow-Catback Exhaust with a Custom Short-Ram Intake...in your opinion what would you suggest the car's total BHP is??? I plan on adding a Turbo Kit,Nitrous Kit and 2.4 headers very soon to see real HP and Torque Gain..thanks for your help and I will pick an answer.
I have never gained more than 10 HP on my 145HP, 4 cylinder vehicle with just those modifications. In the cars I've worked on, we averaged a horsepower gain of 6 with an exhaust and WAI setup. With that said, I would say you now have 144 HP at the crank.
1992-1995 HONDA CIVIC 2/4DR EX DX LX / 96-00 CIVIC EX CATBACK EXHAUST SYSTEM, 1992-1995 HONDA CIVIC 2/4DR EX DX LX / 96-00 CIVIC EX CATBACK EXHAUST SYSTEM, RSX NON-S JDM RAINBOW BURNT TIP CATBACK EXHAUST MUFFLER, POLISHED STAINLESS STEEL JDM HONDA CIVIC EX DX LX SI 2/4 CATBACK EXHAUST SYSTEM, 2004-2007 SCION TC N1 CATBACK EXHAUST MUFFLER 2005 2006, JDM 94-01 ACURA INTEGRA GSR CATBACK EXHAUST MUFFLER, 06-09 HONDA CIVIC 4DR EX LX N1 CATBACK EXHAUST MUFFLER, 1996-2000 HONDA CIVIC 3DR EK CATBACK EXHAUST SYSTEM TI, 1992-1995 HONDA CIVIC 2/4DR EX DX LX / 96-00 CIVIC EX S/S EXHAUST CATBACK SYSTEM, 1994-2001 ACURA INTEGRA JDM N1 CATBACK EXHAUST SYSTEM, 1992-1995 HONDA CIVIC 2/4DR EX DX LX / 96-00 CIVIC EX S/S EXHAUST CATBACK SYSTEM, ECLIPSE NT GS RS 2.0L S/S 2.5" INLET CATBACK EXHAUST SYSTEM NON TURBO, 92-95 HONDA CIVIC 2 4 DOOR EX DX LX / 96-00 CIVIC EX CATBACK EXHAUST SYSTEM, 96-00 HONDA CIVIC 3DR JDM N1 CATBACK EXHAUST SYSTEM DX, ^High Power Drift Spec JDM 95-98 Nissan S14 240SX N1 Catback Exhaust Muffler Tip, 1992-1995 CIVIC EG 3DR HATCH CATBACK EXHAUST 1993 1994, 92-95 HONDA CIVIC 2 4 DOOR EX DX LX / 96-00 CIVIC EX CATBACK EXHAUST SYSTEM, Megan Racing Exhaust D-Spec Catback 92-00 Civic 2/4-door, Except 99-00 SI Model, Megan Racing Exhaust D-Spec Catback 88-91 CRX HF Model Only, Megan Racing Exhaust D-Spec Catback 96-00 Civic 3-door, Megan Racing Exhaust NA Type Catback 02-03 Sentra SER/Spec V, Megan Racing Exhaust D-Spec Catback 99-04 Mitsubishi Galant 4cyl, MEGAN CATBACK EXHAUST 94-99 ACURA INTEGRA GSR TYPE-R 2D, Megan Racing Exhaust D-Spec Catback 92-95 Civic 3-door, Megan Racing Exhaust D-Spec Catback 00-03 Honda S2000 (AP1 F20C ONLY) V1 (2.5"), Megan Racing Exhaust D-Spec Catback 94-99 Acura Integra LS/RS 2-door, Megan Racing Exhaust D-Spec Catback 84-87 Corolla AE86 GTS, INTEGRA LS/GS/RS 4" RAINBOW TIP CATBACK EXHAUST MUFFLER, 1998-2002 HONDA ACCORD 2DR/4DR EXHAUST CATBACK TITANIUM, ACURA RSX TYPE-S 4" RAINBOW TIP CATBACK EXHAUST MUFFLER, *RACING SPEC* 94-01 Acura Integra GS-R VTEC Catback Exhaust Muffler Bolts Gasket, 02-05 NISSAN SENTRA SER SPEC N1 CATBACK EXHAUST MUFFLER, JDM HONDA 88-91 CRX DX Si SS EXHAUST MUFFLER BURN TIP CATBACK SYSTEM, JDM MITSUBISHI ECLIPSE GST 2.0L TURBO EXHAUST CATBACK SYSTEM +HP, 1995-1999 ECLIPSE GST 2.0L TURBO JDM CATBACK EXHAUST MUFFLER, HONDA CRX 88-91 3DR 4" CATBACK EXHAUST MUFFLER STAINLESS, 1990-1993 ACCORD CATBACK EXHAUST MUFFLER TITANIUM TIP, OBX Catback 02-06 Nissan Sentra SE-R SPEC V Exhaust b9, HONDA S2000 AP1 4" BURNT TIP SS CATBACK EXHAUST MUFFLER, 1992-1995 HONDA CIVIC 3DR EG CATBACK EXHAUST SYSTEM TI, SCION tC STAINLESS STEEL RACING EXHAUST CATBACK SYSTEM, 02 03 04 05 NISSAN SENTRA SER SPEC V N1 CATBACK EXHAUST, JDM HONDA 88-91 CRX DX Si SS CATBACK EXHAUST MUFFLER KIT, 92-00 CIVIC FULL EXHAUST SYSTEM HEADER + TEST PIPE + CATBACK MUFFLER, JDM SRS FULL STAINLESS STEEL CATBACK EXHAUST SYSTEM 02-05 NISSAN SENTRA SPEC V , MEGAN RACING CATBACK EXHAUST 02-03 NISSAN SENTRA SE-R/SPEC-V 4DR SEDAN B15 ONLY, NISSAN 240SX S14 TURBO 95-98 CATBACK EXHAUST MUFFLER, 02-05 NISSAN SENTRA SPEC-V 4.5" TIP STAINLESS CATBACK EXHAUST MUFFLER w/SILENCER, MEGAN CATBACK CAT BACK EXHAUST DRIFT SPEC 2.5" 89-94 NISSAN 240SX S13 SILVIA, MEGAN CATBACK EXHAUST DRIFT SPEC 2006-2009 VW GTI 2.0T,