shadowboym

Going to try and start the car tonight running microsqurt v3 1000cc sec and prim injectors, bnr stage 3 with Garrett .60 ar compressor and wheel large street port Cosmo re housings rotors and eshaft can anybody help with a base tune just to get it started at least, it would be much appreciated

dillrx7

iTrader: (3)

Look on aaron cakes website he has a ve fuel table and ignition table you can download it will start your car no problem!

shadowboym

Well looks like it was a fail :'( may have a hardware issue with my microsqurt v3

shadowboym

Dying to have this running

dillrx7

iTrader: (3)

Did you look at aarons map? It started my car no problem, do you have megasquirt or microsquirt? Might be slight differences not sure, send aaron cake a pm and see what be says!

chango de naranjito

what's exactly your probpem? maybe I can help

spokanerxdude

iTrader: (4)

Here is a link to Aaron Cake's write up. It would also help if you upload a data log and your msq file.

How To Megasquirt Your 2nd Gen RX-7

Aaron Cake

iTrader: (1)

What's the issue you are having?

Most of the MS2 settings translate to the Microsquirt, you just need to pay attention to spark output settings.

My maps, assuming your Req'd Fuel is calculated correctly for those big injectors (my maps are based on stock injectors) should start the car.

shadowboym

Car just won't stay running at all like it's getting flooded out or choked out by too much air. Starts and runs for a few seconds then dies.

Aaron Cake

iTrader: (1)

Well, that's either too rich or too lean. Probably way too rich if you are using maps (like mine) that assume stock injectors and you have 1000CC primaries.

Taking a datalog of the startup will help you see what the injectors are doing.

Check injector time. A typical street port idles around 1.8 - 2ms on 550CC injectors. And cranks at 10 MS, afterstarts at about 7-8, then starts to quickly taper down during warmup (about 4 ms tapering down to final idle).

If you are seeing those sorts of numbers on your 1000CC injectors then you are flooding out.

Disable afterstart enrichment.

Set cranking PW to about 8 MS

Take a bunch out of the warmup enrichment.

As soon as it starts, catch it with the pedal and try to keep it running around 2500 RPM where it can tolerate the large amounts of fuel, then quickly pull fuel from the VE table until it stabilises. You will need to keep altering the VE table at that point until the warmup enrichment stops because you are "tuning" around it.

Have seen this?
How To Megasquirt Your 2nd Gen RX-7: Starting The Car For The First Time

And this?
How To Megasquirt Your 2nd Gen RX-7: Basic Tuning

shadowboym

Thanks. I'll look into it. Had timing issues. Non rotary guys trying to make a rotary run lol. I got my car back today. The builder and tuner went out of town for a couple weeks.. So I have it and I want to attempt to make it run myself. I think he has your base map loaded. Just modded a ford tps for full range. He said it needs calibrated still

shadowboym

Ok really stupid question as I am super newb not sure how to get logs and view them or save/upload them. Really need help with this. Found my main issue that i needed to calibrate the tps now it starts will run under blipping the throttle then die.

Aaron Cake

iTrader: (1)

In TunerStudio, select "Data Logging" from the top menus and then "Start logging". It asks for a location to save the file. If you are wanting to post the file here, keep the log fairly short so the file size doesn't exceed the upload limits.

shadowboym

this is the current map on it,

shadowboym

whats the best way to caltulate fuel for my injectors?

Aaron Cake

iTrader: (1)

There is a fuel calculator in Engine Constants. Enter in your engine data, injector sizes, etc. and it will calculate ideal injector time for 100% VE at 14.7. That's the Req_Fuel.