Saxophonias D14a4 engine dynos

[saxophonias]

Here i am going to upload all the dyno sessions i have had all these years. I can recall 4 different dynoplots during the several stages of tuning. The sad thing is that almost all these were performed on different dynos so any chance of comparability is minimal.

First attempt

Engine Specs
1. panel filter in the stock airbox (apex air attack),removal of the resonator, intake pump 80mm,
2.cat back exhaust 50mm
3.sparks denso iridium power
4.oil used, mobil1 0-40
5."sport-spec" valve timing adjustment.
the results are calculated in the crank
113hp-5840---98whp
141NM at 5177

This is a very optimistic result with the at the time mods.

2nd Attempt
At a Maha dyno

Engine Specs

-118bhp@6500rpm

-137Nm@5400rpm

1.Simota air Induction Kit

2.60 mm intake tube

3.Denso iridium power sparks

4."sport-spec" valve timing adjustment

5.Mobil 0W40 engine oil

6.Custom cat-back exhaust 50 mm

7.Dc Sports 4-1 ceramic coated exhaust manifold

8.Sebring high flow cat

-3-wire O2 sensor

9.JG Edelbrock IM

This is a more optimistic approach. Still no engine management tuning. And as you will see in a while even an apexi vafc gave some hps by improving a/f ratio.

3rd Attempt

This time it's a dynapack dyno which measures power at the wheel hubs. I think this is very reliable as this dyno can't be ''fooled'' by alignment and wheel parameters. It's also great for ecu tuning as it can actually control the engine and hold it every 100rpm. Of course you dyno the car with the wheels off the car.
I went there to tune my apexi vafc with the use of a wideband sensor.

There were several dyno sessions and finally you can see the results. 7whp more, after the apexi had been tuned. Great results.

This is the power curve. The faded one is the first and the bold one is the last. Great improvement throughout the wideband

4rth Attempt.
This is the last dynoplot i have. My car already had 150.000km with stock clutch and a closer and shorter gearbox (4.4FD) meaningly more looses in an ordinary dyno like Dynomet.

The extra mods are the following

55mm exhaust tube
removal of a/c pulley
ram air tube
AEM pulley kit

And here is where i currently stand.
*The previous day i went to another Dynapack which has stricter software

So 98.5whp..

There some minor things that i have in my garage like
Fuel pressure regulator
Cam gear
Exedy Clutch
Fidanza Flywheel
which i intend to use in the immediate future

The real deal i have been planning though, is to use a second stage bisimoto cam along with springs and retainers, rev the engine close to 8000rpm and swap a programmable obd1 ecu.
So more are yet to come for my D14.

[mark_ej9]

You mention an exedy clutch and fidanza flywheel?? What ones fit a d14??

[saxophonias]

The ones meant for d16z/y will fit

[Law_]

if i understood right you did not swap your ECU for a P something?
Cheers

[saxophonias]

if i understood right you did not swap your ECU for a P something?
Cheers

Correct! I tuned the stock ecu with a piggyback--->Vafc. This device can alter only the air fuel ratio.

[mynameisowen]

Very impressive results without OBD1 conversion. How come you didnt convert??

[saxophonias]

no big deal man! Typical numbers that you can get with cheaper parts.
i would really like to do the obd1 conv. but there were too many parts involved and i considered it to be expensive.

[hondaNickx]

Impressive results without the obd1 conversion I think you could really have some good gains by doing the obd1 conversion and using crome ,neptune,hondata,ectune to adjust all the values correctly.

[saxophonias]

It's the harness what i have been waiting for all this time

[mynameisowen]

It's the harness what i have been waiting for all this time

haha, me too It is true though, I was impressed by your dyno's. You engine probably has some good potentiall.