Indian vtec 106 bhp Thai Vtec 120 bhp

ajmat · 20th April 2004, 15:20

If you look at the manual,, you find that the Vtec is detuned for India. Now that we have 93 octance petrol - is there anyway to bring the car back to original spec ?

Shan2nu · 20th April 2004, 16:34

The Indian Vtec has a compression ratio of 9:1. Maybe if we can increase that, the power will come to around 120bhp.

Regards..
Shan2nu

Rehaan · 20th April 2004, 23:43

Any idea exactly what the compression ratio for the Thai vtec is?

R

GTO · 7th March 2006, 15:10

Maybe some of our members from the tuning community would have inputs on this?

GTO

Psycho · 7th March 2006, 16:17

Remember Rtech confirming Comp ratio is 9.1:1 for the vtec, also remember Dom confirming the ECU being used in the Indian VTEC's being a P03.

However looking at the closest engine:

96+ Civic HX D15Z 1493cc
4 cyl, 16 valve
SOHC VTEC-E
9.4:1 c.r.
PGM-FI (MPFI)
115 bhp @ 6200
Redline: 7100 rpm 104 lb-ft @ 5400

or the

92-95 Civic VX D15Z1 1493cc
4 cyl, 16 valve
SOHC VTEC-E
9.3:1 c.r.
PGM-FI (MPFI)
92 bhp @ 5500
Redline: 7000 rpm 97 lb-ft @ 4500

The comp ratio is to a max of 9.4 and were designed to run on 91 octane. The ecu's however differ, the matching ecu code for a civic in the US is P08J or the P28.(http://www.hondata.com/vehicles.html...n&ct=clnk&cd=5) Also Hondata ECU's are available to remap the ecu's even further. Please note the Indian ECU is a OBD1 and not a OBD2.

Hope that this clears the doubts.

BUSA · 7th March 2006, 16:46

Leela has retuned his Vtec, it costed him Rs. 65,000 for the remap. The car goes all the way till 8500RPM.

Psycho · 7th March 2006, 17:07

Quote:

Originally Posted by BUSA

Leela has retuned his Vtec, it costed him Rs. 65,000 for the remap. The car goes all the way till 8500RPM.

Well Leela does his own remaps and ECU tuning and he specialises in ECU's like Link, Motec, Apexi etc.

Hondata is also a similar tool that can allow you to tune the ECU off the orignal Honda ECU with a few minor changes and a daughterboard. You can change parameters like VTEC engament rpm, rev limit, ignition map, fuel map etc.

n_aditya · 7th March 2006, 18:21

any idea about the esteem? how can i get it bck to its full power?

20th April 2004, 15:20	#1
ajmat Team-BHP Support Join Date: Feb 2004 Location: Bangalore Posts: 14,860 Thanked: 27,955 Times View My Garage	If you look at the manual,, you find that the Vtec is detuned for India. Now that we have 93 octance petrol - is there anyway to bring the car back to original spec ?
	() Thanks

20th April 2004, 16:34	#2
Shan2nu Senior - BHPian Join Date: Feb 2004 Location: Hubli - Karnata Posts: 5,533 Thanked: 125 Times View My Garage	The Indian Vtec has a compression ratio of 9:1. Maybe if we can increase that, the power will come to around 120bhp. Regards.. Shan2nu
	() Thanks

20th April 2004, 23:43	#3
Rehaan Team-BHP Support Join Date: Feb 2004 Location: Bombay Posts: 24,042 Thanked: 34,074 Times	Any idea exactly what the compression ratio for the Thai vtec is? R
	() Thanks

7th March 2006, 15:10	#4
GTO Team-BHP Support Join Date: Feb 2004 Location: Bombay Posts: 70,512 Thanked: 300,679 Times View My Garage	Maybe some of our members from the tuning community would have inputs on this? GTO
	() Thanks

7th March 2006, 16:17	#5
Psycho Senior - BHPian Join Date: Jul 2004 Location: Bangalore Posts: 1,043 Thanked: 110 Times View My Garage	Remember Rtech confirming Comp ratio is 9.1:1 for the vtec, also remember Dom confirming the ECU being used in the Indian VTEC's being a P03. However looking at the closest engine: 96+ Civic HX D15Z 1493cc 4 cyl, 16 valve SOHC VTEC-E 9.4:1 c.r. PGM-FI (MPFI) 115 bhp @ 6200 Redline: 7100 rpm 104 lb-ft @ 5400 or the 92-95 Civic VX D15Z1 1493cc 4 cyl, 16 valve SOHC VTEC-E 9.3:1 c.r. PGM-FI (MPFI) 92 bhp @ 5500 Redline: 7000 rpm 97 lb-ft @ 4500 The comp ratio is to a max of 9.4 and were designed to run on 91 octane. The ecu's however differ, the matching ecu code for a civic in the US is P08J or the P28.(http://www.hondata.com/vehicles.html...n&ct=clnk&cd=5) Also Hondata ECU's are available to remap the ecu's even further. Please note the Indian ECU is a OBD1 and not a OBD2. Hope that this clears the doubts.
	() Thanks

7th March 2006, 16:46	#6
BUSA Senior - BHPian Join Date: Aug 2005 Location: Bombay Posts: 5,130 Thanked: 20 Times View My Garage	Leela has retuned his Vtec, it costed him Rs. 65,000 for the remap. The car goes all the way till 8500RPM.
	() Thanks

7th March 2006, 18:21	#8
n_aditya Senior - BHPian Join Date: Oct 2005 Location: Namma Bengaluru Posts: 5,348 Thanked: 3,684 Times View My Garage	any idea about the esteem? how can i get it bck to its full power?
	() Thanks