New #'s for 68HTA. 374hp/359tq @ 21PSI
03-21-2010, 03:31 PM
#19
Still haven't relocated MAF.. I did a little tweaking and managed to push the boost to 21 PSI.. CEL came on after 6100k rpm for MAF sensor high input, but still managed a clean pull out of it..
Maf is currently 73mm - going to move to 85mm sometime next week when I get a chance to weld the MAF flange onto the larger pipe..
Rough-ish tune.. The comparison is to the 19t that was in there before.. Both on e85, almost identical tunes..
19t @ 22-23 PSI
68HTA @ 21 PSI
IDC is hitting 97%....... I'm still about a half an (e85) AFR rich across the board.... If I manage to crack 400 WHP on these injectors they are going to be screaming.. Don't know what fuel pressure is like.. Only running a single Walbro 255HP.
Still plan on pushing the boost as high as these injectors will let me once MAF is relocated.. Hoping for around 28 PSI..
Maf is currently 73mm - going to move to 85mm sometime next week when I get a chance to weld the MAF flange onto the larger pipe..
Rough-ish tune.. The comparison is to the 19t that was in there before.. Both on e85, almost identical tunes..
19t @ 22-23 PSI
68HTA @ 21 PSI
IDC is hitting 97%....... I'm still about a half an (e85) AFR rich across the board.... If I manage to crack 400 WHP on these injectors they are going to be screaming.. Don't know what fuel pressure is like.. Only running a single Walbro 255HP.
Still plan on pushing the boost as high as these injectors will let me once MAF is relocated.. Hoping for around 28 PSI..
03-22-2010, 01:43 PM
#25
We'll see..
@ Ryan - Ive spotted some 370 ish Dynojet sheets on 93.
Note - 93 and califorina owl **** are in totally seperate leagues - as a reference, on the 19t I managed to make 305hp on the airboy plots on e85 - but on 91 I never got much over 230 safely.. Just couldn't get any kind of timing. As long as you had enough fuel, I'd guess you could make mid 300's on a dynojet safely on 91.. But that is just a guess.. I hate 91 and will never run it again
In all honesty, I'd be happy if It managed to scrape 350-360 on the mustang (Mustang's tend to read something like 12% ish lower than a Dynojet - But they are a FARRR superior dyno for tuning purposes)..
Those numbers are all Airboy plots.. Who knows how accurate they are - AND they depend on you getting all your data entered correctly.. I.E. tire sizes, temps, weight, altitude, ambient air temps, gearing changes if any.. The macros use that data along with the known coefficient of drag for your car and a bit of math of a logged run and interpolate appox wheel HP and tq.. I've read around that supposedly they are fairly close to the numbers a Dynojet would put out, but once my car started crossing corssing the 400HP mark on the airboy plot at only around 25 or 26 lbs I started getting skeptical..
But in the end, numbers are just numbers.. I'm more interested in what happens Wednesday night after the car is nice and dialed in.
@ Ryan - Ive spotted some 370 ish Dynojet sheets on 93.
Note - 93 and califorina owl **** are in totally seperate leagues - as a reference, on the 19t I managed to make 305hp on the airboy plots on e85 - but on 91 I never got much over 230 safely.. Just couldn't get any kind of timing. As long as you had enough fuel, I'd guess you could make mid 300's on a dynojet safely on 91.. But that is just a guess.. I hate 91 and will never run it again
In all honesty, I'd be happy if It managed to scrape 350-360 on the mustang (Mustang's tend to read something like 12% ish lower than a Dynojet - But they are a FARRR superior dyno for tuning purposes)..
Those numbers are all Airboy plots.. Who knows how accurate they are - AND they depend on you getting all your data entered correctly.. I.E. tire sizes, temps, weight, altitude, ambient air temps, gearing changes if any.. The macros use that data along with the known coefficient of drag for your car and a bit of math of a logged run and interpolate appox wheel HP and tq.. I've read around that supposedly they are fairly close to the numbers a Dynojet would put out, but once my car started crossing corssing the 400HP mark on the airboy plot at only around 25 or 26 lbs I started getting skeptical..
But in the end, numbers are just numbers.. I'm more interested in what happens Wednesday night after the car is nice and dialed in.
03-22-2010, 01:51 PM
#26
We'll see.. FP rates the 68HTA at 47 lbs/min. From my experience so far with this turbo I'd have to guess that isn't an overly optomistic number.. This little thing seriously breathes.. If I didn't know what it was, the top end flow of this thing would have me guessing the turbo was a 20g with a fat turbine housing.
Kinda amazing that its coming from something this small..
Kinda amazing that its coming from something this small..
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