MicroSquirt.com read only forum (Jan.15,2018)

i have seen a 355 iat on a dyno, and a real crappy intercooler, i don't think it can possibly be correct

I have a twin SC 355 and I know that the temperatures can get this high at high pressure ratios. The SC doesn't care if it's boost or vacuum and you'll have high P/R at idle. If you have a by ...

Do you have a by-pass valve?

I have a setup with two twinscrew chargers on a 355" chevy and when I measured my discharge temperature at idle it was 75ºC (167F) with closed by-pass and dropped to 45ºC(113F) with the by-pass open.

There is more good info. here: http://www.msefi.com/viewtopic.php ...

so far i understood that the DI cassete uses a voltage to across the plugg for ionization till TDC is reached when by the preset advance and timing parameters the DI controler sends the signal to ignite the mixture.
(if i didnt missunderstood the whole thing, then i have to re-read the whole thing ...

Message #23389 on the old Yahoo list also has some good info on how to do this.

From tbitz:

Thought I'd pass on this info.

Here is how I measured the injector open time using the megasquirt
ECU. Firts the engine was brought up to temperature so no
enrichements were active. Accel enrichements ...

Stoich AFR for E20 is 13.142

You can find more about how differnt H/C and O/C ratio in the fuel affect your WB sensor readings in this thread.
http://www.msefi.com/viewtopic.php?p=70606#70606

Lars

olsteve wrote:That looks like the VE table. I think he wants the timing table.

It is my timing table. I'm no expert, but I think the numbers in the advance table .vex are "raw" 0-255 corresponding to -10 to 80 degrees. If you open it as a text file the numbers make no sense.

Lars

This .vex is for a 355 chevy. Victor Jr heads, 7.8:1Cr. Tested up to 160kpa on 98RON.

Per, I saw your PM but was not able to attach anything so you have it here instead.

Lars