Just a stab in the dark here.... If adding the TIP increases the Volumetric Efficiency, then perhaps slightly less boost is required to hit the same load targets. That is, the aftermarket TIP is allowing air to flow more freely into the system (increasing VE), so you don't have to "Jam" as much air in (boost) to get the same amount air into the engine. Just a thought.. could be way off here.
but the car still has to suck in the same amount of air to presurize the stock system...
humm...
well then just out of curiosity, how would the same map boost 16 psi for me, and hold 19 psi for someone else with similar mods? yet i hold about the same air fuel ratio.
I was thinking after the system is pressurized... again, just a shot in the dark tho.
Well, according to Bova, if you're MAF calibrations were very different, that could explain it. That is, assuming you both calibrated your MAFs differently (which is likely) or one did and the other did not, this would affect load, boost, etc.. as he said. I have no clue how much a 2% difference in MAF volts would translate to load and boost wise, however, I've seen my OL/WOT afrs run super rich when I over-calibrated the MAF by that much by mistake (made it too rich in the upper voltages).
nono, like he was nice enough to actually send me the exact map he is using.
nono, like he was nice enough to actually send me the exact map he is using.
I'm running boost based map from Frozda, and we have similar mods, and we're both running the Perrin ebcs in "interrupt mode." However, he was able to run the OTS wgdc values for the most part, and hits his target boost perfectly. I had to tweak the wgdc tablel quite a bit, and I WAS getting there, until the Perrin crapped out last week. I'm hoping I just got unlucky and had a faulty solenoid, which was causing the extra tuning, but I doubt it. Perrin redesigned the ebcs, but it doesn't make much of a difference on other platforms (like a 2% decrease in wgdc). I've got the upper end reduced by 13% already, and I'm still over-shooting my targets :/
I think the variances when people have similar mods, but different load/boost/etc... MAY be related to when their ECU was manufactured, and what (if any) dealer ECU flashes have been performed.
doesn't matter if you are running the same exact map. no 2 cars respond the same, and i doubt your setups are exactly the same. and don't forget that weather and elevation will cause your maf calibration to also be different. you have to look at the big picture, not every car will be the same. also make sure you don't have any kind of boost leaks.
Essentially if you haven't calibrated your MAF sensor properly, you might as well start over. That is step 1.
if i run 11.59 all the way up to 6500 should i not keep that as a base? i dont want to start tuning from a lean map.
true.
exactly the same no, but i am behind in only the catback section.
boost leaks are a no because i have checked and double checked when i installed my fmic. and going from stock to fmic the levels only changed by half a psi on the stage 1 map i was still running.
if i run 11.59 all the way up to 6500 should i not keep that as a base? i dont want to start tuning from a lean map.
doesn't matter if everything is the same there will still be some differences, (ie the gas you fill up with, the weather outside, your elevation, do your filters have the same amount of dirt molecules on them (lol), is your maf sensor clean or dirty, are you running a catch can or not, etc....). i suggest calibrating your maf and adjusting this stuff yourself. don't expect ots maps to be the end all.
what are your ltft?
