Anyone here running upgraded injectors on a full na build with airbox and 280/272 cams? I had a full top end rebuild with schrick 280/272 cams and some intake porting and made 359 whp on a mustang dyno with hassan but he noted my stock injectors were almost maxed out to keep the afr safe up top and recommended I upgrade to 440cc injectors. Shortly after I noticed my wideband reporting 10.9-11.2 wot consistently which is way too rich. He had to lean the wot trims out and now its perfect at 12.5-12.8 which is right where it needs to be, but I have other issues... Primarily the car idle dips coming to a stop when I clutch in, there's a random hiccup at 3k, and the big annoyance is blipping. I track this car a lot and drive it very spiritedly on backroads and can tell you this is a tuning issue. If I am off the throttle for more than 1-2 seconds and go to blip it will randomly miss where other times it will overrev. Annoying af because that's what makes it seem like you can't drive while also being sketch if I were to lockup the rearend at 100mph etc.
My buddy also has a tune from hassan with similar issues but he's completely stock motor. Without certainty I am going to get a retune but I'm torn on Hassan vs PCS. Drivability is huge to me and Hassan told me multiple times he could achieve STOCK drivability with a MAP tune on CSL dme which I'll be honest, it has fallen short of expectations. The car spends most of its time at redline where it is indeed safe, but around town its junk.
He also told me that a street tune after the dyno was unnecessary to sort out my complaints and that the dyno would uncover it all, but that is far from true because the dyno can't replicate situations of no temporary no load situations like you would encounter when you're not at wot and are downshifting or just coasting to a corner on the street and go to rev match a few seconds later.
At this point, I'm one trying to confirm if I really need bigger injectors (doesn't sound like it), but most importantly, do I give Hassan another chance or find someone else? If I don't need to bother with injectors, I think I'm just going to pay him for a live street tune and have him datalog and adjust for all my issues as they happen. Don't really see any other way.
I bring this all up because I know most guys don't pay close enough attention to the fine details and are only concerned about WOT and power but I ask you all to look at your current tunes and report back if you notice similar issues that you have "adapted to" because I can say with absolute certainty a stock m3 does not have these drivability issues.
My buddy also has a tune from hassan with similar issues but he's completely stock motor. Without certainty I am going to get a retune but I'm torn on Hassan vs PCS. Drivability is huge to me and Hassan told me multiple times he could achieve STOCK drivability with a MAP tune on CSL dme which I'll be honest, it has fallen short of expectations. The car spends most of its time at redline where it is indeed safe, but around town its junk.
He also told me that a street tune after the dyno was unnecessary to sort out my complaints and that the dyno would uncover it all, but that is far from true because the dyno can't replicate situations of no temporary no load situations like you would encounter when you're not at wot and are downshifting or just coasting to a corner on the street and go to rev match a few seconds later.
At this point, I'm one trying to confirm if I really need bigger injectors (doesn't sound like it), but most importantly, do I give Hassan another chance or find someone else? If I don't need to bother with injectors, I think I'm just going to pay him for a live street tune and have him datalog and adjust for all my issues as they happen. Don't really see any other way.
I bring this all up because I know most guys don't pay close enough attention to the fine details and are only concerned about WOT and power but I ask you all to look at your current tunes and report back if you notice similar issues that you have "adapted to" because I can say with absolute certainty a stock m3 does not have these drivability issues.
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