uvamosk

Hello everybody,
After 3 months of part buying and wrench turning I finally have my car on the ground and running. I had it dyno tuned today and decided to put all the results for others to study and use for reference.

I give major props to http://hybrid.honda-perf.org/index.html as he helped me with all his information. It was a very good source for my research into this setup and what parts to use.

I picked this engine for its mid range torque and broad power band as this car will be my daily driver. Most of my tuning efforts are spent on having a readily available power band that and a strong flat torque curve. You will see me talk about this a lot and see that my mods are focused to that goal.

With out further delay here we go:

Chassis: 2000 Honda Civic EX Automatic Coupe

Engine: JDM B20B (High Compression 9.6:1) Complete stock engine

Intake:
Intake Manifold: 1999 B20Z/B18B intake
Intake Manifold Gasket: Hondata Thermal Barrier gasket
Intake Pipe: Password JDM Civic SI intake

Fuel:
Fuel injectors: Stock 1997 B18B
Fuel pump: Walbro 255LPH
Fuel Pressure Regulator: Blox
Fuel Pressure Gauge: B&M

Exhaust:
Exhaust Header: Hytech Replica (Got screwed o well)
Exhaust: SRS 2.25" Exhaust (Temporary)

Spark:
Spark Plug Wire's: NGK Blue's
Spark Plugs: NGK Iridium (Forgot part number)
Distributor Rotor: New from Advance auto (I know, should have been OEM)

Crank Pulley: B16A

Transmission:
Transmission: 99-00 Civic SI transmission
Flywheel: Excedy Light Flywheel
Shift Linkage: Type R with Energy Bushings and type are shifter

ECU:
Hardware: P28 with Moates Ostrich and Hulog permanently attached to ECU:
BIN File: Base P72
Maps: USDM P75 Maps

Side Notes:
I retained A/C and Power steering and my cruise control.
Carbon canister system fully removed and vented to under car.
Fuel pressure was set to 52PSI Vac Off and 45PSI Vac ON
Timing was set to 16.5


If I remember anything else I'll add it later.



Very First Pull (using p72 base and usdm B18b maps at 52psi Vac off fuel pressure)



Final Pull (using p72 base and modifed B18B Maps at 52PSI vac off fuel pressure)




Summary:
The USDM B18B maps run lean on a stock B20z/B20b high comp anyway so they actually are almost spot on in the top end in terms of power production.

What you will notice in great abundance was the amount of low end torque the tuner was able to bring out in the motor. I saw 10ft-lbs gains from 3k to almost 6k. Not only was this power brought to the surface but also the smooth liner delivery of that torque.

I'm very impressed with the throttle response of the engine and how willing it is to pull in about any gear you are in.

I will be attaching the BIN file I have for this tune to my post as from experience I find it almost impossible to find a good b20 map that hasn't been turbo'd or vtec head swapped.


Let me know what you guys think of the dyno pull and if you have any tips or tricks.

canadaek

links for dyno sheets don't work .

uvamosk

FIXED, sorry about that lol.

EsotericImage

iTrader: (8)

swap that crappy 2.25" for 2.5"
get a better intake manifold and port it to 68mm
get a 68mm TB
take off that crap Blox FPR and use OE
quit messing with the fuel pressure



Ive already done this with my B20 and got 149/143 with just I/H/E.

If you want more power, swap out the pistons for type r reps.. will bring the CR to 10.9 then look to some decent cams.

uvamosk

You did the piston swap also?
Plans are to get a 2.5" ID when I bought this it was said to be 2.5" well they quote OD. It was just there to get exhaust to the back of the car as I haven't decided turbo or N/A at this point.

I haven't altered the Fuel Pressure. I set it to Factory 51PSI and then bumped it to 52psi just to compensate for b18b maps being lean on high comp b20.

Thanks for advice.. and I'll look into the 68mm tb and intake manifold.

I was thinking of machining a GSR manifold so I could see if there are any benefits to the power band.

This isn't a max hp car i'm just playing around trying things see what happens.

EsotericImage

iTrader: (8)

GSR wont fit.

Factory fuel pressure isnt 51lbs

get a tubing kit here for cheap
http://www.vrsexhaust.com/TUBING_KIT.../honda_tk.html

yungkhmer

wheres the .bin file?

uvamosk

Haven't pulled it to upload yet.

yungkhmer

lemme know when you do

uvamosk

51Lbs was out of the FSM with vac off


I got the GSR manifold and looking at making an adapter flange. I just want to play around with the manifold.

uvamosk

Planning to upload it tonight. Sorry it took so long working lots of hours.

nealnanoHX

No they are not, I can not see any dynos.
Also yeah 51lbs is not factory fuel pressure. At idle my LS Vtec is around 35, would need to fire it up and check to make sure. Put the factory FPR back on. If you had it tuned then the tuner should have changed the fuel maps for the motor so it will not lean out. Get a GSR head to go with that mani and you will see some big HP gains. And I would get at least a 2.5 inch cat back and test pipe if not 3 inches. The B20 likes to breath, especially with a Vtec head.