Flashed the base 93/98 for high flow DP today

Discussion of tuning specific to MAZDASPEED3/MAZDASPEED Axela/Mazda 3 MPS vehicles
mituc
VersaTuner guru
Posts: 1329
Joined: December 17th, 2011, 2:47 pm
Location: Iasi/Romania

Re: Flashed the base 93/98 for high flow DP today

Post by mituc »

Ok, indeed, I found that spot now, went up to 1.706 and then stabilised at 1.2 or so. It's also during a gear change, not sure why I'm spiking sometimes between gears. Wastegate duty cycle went up to 55.3% just a reading before the high load event, so probably I'll have to tune the BCS Base table around 4500rpm as it always happens there.
Also, today I drove pretty slow, I don't think I went above 50, maybe 60% app even if I reached 5400rpm once or twice.

This is going to end on Mar 23 anyway, maybe after I'll get a a tune from a pro I'll be able to figure out why this was actually happening.
2008 Cosmic Blue Mazda 3MPS
Built engine + WMI + GTX3071 gen2, ~509BHP @34PSI
2008 Icy Blue Mazda CX7
Stock engine and exhaust (YES!!), JBR3" + GTX2867 gen2 + Autotech HPFP, self-tuned to 330-ish BHP
User avatar
Steve @ VersaTune
Lead tuner
Posts: 1157
Joined: March 29th, 2010, 12:58 pm

Re: Flashed the base 93/98 for high flow DP today

Post by Steve @ VersaTune »

Boost spike after a shift is common with a DP, high flow exhaust, and CAI. The turbo spools up much faster than stock. You can tune the BCS DC Base table and the Requested Load Multiplier Accel/Decel tables to smooth it out.
Post Reply