The MegaSquirt Project has experienced explosive growth other the years, with hundreds of new MS installations occurring every week - a phenomenal success! MegaSquirt has been successfully used in all aspects of Internal Combustion engine applications including R&D, Industry, Race, and Research. The MS project has transformed itself from a simple R&D project into a full-featured mature engine control system. To reflect this the support structure has also changed to meet the needs of MegaSquirt Users.
Moving forward, the R&D forums for MegaSquirt project are in a read-only mode - no new forum posts are accepted.
However the forums will remain available for view, they still contain a wealth of information on how MegaSquirt works, how it is installed and used. Feel free to search the forums for information, facts, and overview.While the R&D forum traffic has slowed in recent years, this is not at all a reflection of Megasquirt users, which continue to grow year after year. What has changed is that the method of MegaSquirt support today has rapidly moved to Facebook, this is where the vast majority of interaction is happening now. For those not on Facebook the msextra forums is another place for product support. Finally, for product selection assistance, all of the MegaSquirt vendors are there to help you select a system, along with all of the required pieces to make it complete.
Forum for discussing how to install MicroSquirt(TM), choose and troubleshoot sensors, wiring, and communications for MicroSquirt (TM) and MicroSquirt Module(TM).
Forum rules
Read the manual to see if your question is answered there before posting. If you have questions about MS1/Extra or MS2/Extra or other non-B&G code configuration or tuning, please post them at http://www.msextra.com The full forum rules are here: Forum Rules, be sure to read them all regularly.
grippo wrote:In looking at the code I believe I see something that mgiht explain a lot. The pulse tolerance used in VR sensor checking is changed after warmup. So this probably the explanation for the change in trigger+/- behavior as soon as warmup temperature was reached. Try setting this tolerance the same as the normal running tolerance and then see if you can go past 4000 rpm before warmup.
This did it!!!!!!!
All this time it was a simple matter of changing the run pulse tolerance. I have the after start and run tolerances both set at 40 and the motor now revs to the moon regardless of the coolant temp. Although I'm sure it didn't like going there immediately after I let go of the start button....
Can't thank you guys enough for your product and support!
Buck
Buck
Tires warmed and engines stressed while you wait...call for an appointment...
The dragster has never run right when it came to starting, throttle response and idling but out on the track it was a different story. The intermittent stalling and 4000 rpm ceiling made it tough to be competitive when the car would stall while staging and then not go past 4000 rpm when/if I could get it to restart. With all that behind me now, I'm really looking forward to the '09 drag racing season.
The best pass to date with my turbo-Hayabusa powered dragster is 8.71 @ 147 mph in 1/4 mile with only 15 psi of boost and a very lazy 60' time. My uS is tuned to 32 psi and this is the year we'll find out what it will do at that level and a proper clutch setup. Low 8's at least and maybe into the 7's if conditions are right.
Thanks again for your help. Couldn't have done it without you guys!! Just for fun, here's a pic of the car:
