november projects

[rasoul]

injector pics

[SteveL]

Do you know what size and type they are?

[rasoul]

They're going to do a before and after flow test on them, will post when I find out.

[rasoul]

Just got a phone call from DeatschWerks, they completed the flow test. The factory injectors are 450cc injectors. I won't get a print-out to scan and post until they are done.

They're going to do an ultrasonic cleaning (not sure what that means) and then retest because one of my injectors was only flowing ~410cc and there's a chance something is wrong with it and they wouldn't want to modify a broken injector. But after that's all done, they're going to increase the size of my injectors to between 700cc and 800cc, depending on how large they can go without losing balancing on the factory housings.

[expo5.0]

thank you for posting all this-

i may use their services for my own injectors soon

can you shed some light on what option you might recommend as far as computer tunign goes for my car? currently i'm pretty stuck...

[rasoul]

Well, that depends on a few things, mainly what all you've done to it and whether or not you're at any hardware peaks or if the bottleneck is the ECU itself. Is your MAP/MAF signal maxed out? Are your injectors at max duty cycle? Currently running rich or lean? Detonation?

If you are not at max duty cycle and you are not pegging out your MAP/MAF, then the simple route to tuning would be a piggy-back "liar" system like the Apexi or MAF Translator. If you are short fuel or need to upgrade your MAP/MAF, then something like that would work with some adjustment, but the route I went was with a MegaSquirt ECU with integrated MAP sensor, and works with any injectors (high impedance, low impedance) but only supports one-cylinder or a distributor type setup. To get around this I'm using an external distributorless ignition system with a trigger wheel and VR sensor. They have their own EDIS system in development at the moment to integrate into the megasquirt, but won't be ready until early next year and I'm impatient (although may adopt later). You can read some of my previous posts in this thread for more details on my plans for integrating with the factory ECU.

Currently I have the unit built and connected to the stim tester board, and I'm doing preliminary setup and fuel configurations before installing in the car. I haven't posted many pics in the past few days, but this post just reminded me that I should, so I'll get right on that. I need to post pics of my trigger wheel and wheel bracket and the ECU among other things. I'm stuck at the office at the moment... perhaps tomorrow.

[rasoul]

Oh, right, in the meantime, for more info check out DIYAutoTune.com Megasquirt Kits / Assembled Engine Management Systems, Wideband o2 Sensor Systems and tuning products or MegaSquirt - Electronic Fuel Injection Computer by Bowling & Grippo * * ©2005

NOT megasquirt.com... I made that mistake while I was at work... not a good site to show up on your work's proxy log

[expo5.0]

currently i have splitsecond psc1-001 maf "scaler" planning to go on the car next week

theoretically it should be enough to tune the car to run pretty well with my stock injectors and 4 lbs of boost. the sc kit basically came with the same thing as the psc1-001 just without any adjustability (sealed unit).

I know the "001" will provide me a bit of tuning, but no where near what i will likely eventually desire.

At the very least i plan to machine my pulley- at this point i have no idea where i'll most past what my stock injectors will support or what the "001" will allow- only that i'm likely to eventually do so. At which point i will need at the least one of the piggy back systems.

i havent yet been able to determine flow rates of my stock injectors (and it seems unlikely i will unless i send them in to your place as described above, or if by chance mine are the same model number). Same goes for the fuel pump.

Wish i knew more at this point about what my "bottleneck" will be.

-drew

[rasoul]

Pic updates.

Here's the trigger wheel on the bracket. It's set up where I can fit a socket through the hole in the middle. This way I can adjust the angle of the trigger wheel space just by loosening the crank pulley bolt, rotating the trigger wheel to the position I need, and then tightening the bolt back.

The arm holds my VR sensor, that detects the position of the trigger wheel.

The other pics are of the completed ECU... now all I gotta do is wire it all together!

... and of course install my modified injectors. They should be in this week.

[Ridingdirty230]

Rasoul how much hp and torque under the hood?