More Horsepower? What can I do??, Vrrrooommmm............. Options

[xsboost90]

my car is exempt here finally, after 25yrs. I swapped the motor from the smogger to a pre smog 2.0 w/a cam, stainless heatexchanger headers and lightened flywheel. We'll see what itll do w/ an electronic ignition.

[rhodyguy]

randy, if you don't have the coinage for a complete heat exhanger swap contact dan root, he's local. he has/had a nice muffler with a bypass pipe for your year.

k

[opera guy]

QUOTE (lapuwali @ Feb 18 2005, 04:15 PM)

The 914 ECU is all analog. It cannot be "chipped". There's no software to alter.

i have eeprom programers (IMG:http://www.914world.com/bbs2/html/emoticons/idea.gif) is that what you mean by "analog"?

[Andyrew]

The computer case has no chips. it is in a gell type cell... There is no way to change with without buying a new computer system.

Ie you would have to go with a stand alone computer like the Megasquirt.

If you want some more, Get a KNN air filter and some headers and remove the smog belt. But keep in mind everything you do To it you have to take off and put back on.

[lapuwali]

QUOTE (opera guy @ Feb 19 2005, 12:48 PM)

QUOTE (lapuwali @ Feb 18 2005, 04:15 PM) The 914 ECU is all analog.  It cannot be "chipped".  There's no software to alter. i have eeprom programers (IMG:http://www.914world.com/bbs2/html/emoticons/idea.gif) is that what you mean by "analog"?

No EPROM inside. No EEPROM. No ROM of any kind.

Unlike a digital ECU, which has a microprocessor inside running a program (which resides in memory somewhere, like in an EPROM) to control things, the D-Jet (and early L-Jet) ECUs are all analog discrete transistors, resistors, diodes, etc. There's no microprocessor, no program. A square(ish) waveform comes in from the trigger points, gets altered by the inductance coils in the MPS and temperature sensors, and goes straight on to the injector drivers as a square(ish) waveform.

Some values can be changed by swapping out resistors or capacitors of different values, but not everything can be altered this way. Some things would require significant rewiring of the board. The "program" that the ECU "runs" is essentially in the layout and values of the components. Once can substantially change the fuel curve in the ECU, but doing so would require doing a lot of reverse engineering with an oscilloscope. Brad Ander's web site has the most relevant data on this.

[redshift]

QUOTE (ArtechnikA @ Feb 18 2005, 09:01 PM)

there will -always- be cars faster than yours.

Oh yeeeeee of little faith....

(IMG:http://www.914world.com/bbs2/html/emoticons/wavey.gif)


M

[airsix]

QUOTE (jim912928 @ Feb 18 2005, 04:48 PM)

if you have 2-3k....turbo it!

...and have enough left over for a paint job! (I did digital injection/ignition + turbo for $675*)

-Ben M.


*PerfectPower ECU $500 installed + $50 junkyard turbo + $125 plumbing & misc.

[MecGen]

Hi
Thanx for the info Lapuwali, I see what you mean, much easier to build/buy a system.
Hey Operaguy, what you doin whith that machine, work or hobby ? HHhhmmmmmm....
WBR
Joe


(IMG:http://www.914world.com/bbs2/html/emoticons/rock_band.gif)

[Bleyseng]

My 76 2.0L car went the 96mm pistons, 8.5to1 comp., heads ported and larger exhaust valves 38mm, backdated to 73 SSI HE's with a Bursch, tuned the Djet on a dyno.
The best dyno runs were 95 Rear wheel hp which is about 110-115hp. Car was pretty quick. I like the Djet as its very simple and can be tuned if you are careful.
Its now coming apart for a major upgrade to a 2.4/4.

Geoff

[porsha916]

First, check compression, if it's good,electronic point replacement, K&N air filter,replace & index plugs, loose the big bumpers, low profile tires(messes up speedo) Try it, then if not enough power sell it or buy another car (smog exempt). good luck (new to posting).

[scotty914]

dump the smog car get a smog exempt and suby it for 2500 bucks you get 175 hp, or even better get a svx 3.3 or wrx for about 240 hp or so, and it even looks kinda stock

[DJsRepS]

I own a grand ole 72 1.7 live in fla no smog laws. I bought a cool looking header exaust with a short muffler system and could feel the difference and it even sounded better. Im not sure if it helped but I put one of those cone filters on it as well. Better than the oil bath.