Aux port delete for FI discussion
#127
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but that means nothing unless your only talking and comparing identical systems/motors.
I would ask this: OD- is your MAF scaled properly(none of this DIY nonsense we've seen pass as tuning here, but properly scaled/tuned)? if so then, the air mass would be much more important to compare
#129
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low/manifold mount. one of them i never found out what he was hiding, but it wasnt the crappy greddy snail and this was before the current "options" for upgrading. the other was a 3071(at least i/we think thats what it is, lol) the Garrett might have been 2-300rpm higher to make 10psi, but it was certainly sub-3000rpm, which still means a fraction of a second of advantage if you care about pressure over flow, and of course start from a dig..
#130
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this isnt new though... this has been put out here before and iirc it was a thread/post from mysql that spurred this previously. iirc he showed logs or vid or something with his setup making either 9 or 11psi(dont recall) at like 2600-2700rpm. that was based on a 3071orsomethingsimilarbutnotthesamesuperdoublesecr etprobationturbo
#131
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ya i just IM'd him, said he was making 12psi by 3,000rpms
but this doesnt matter really... 12psi means nothing when comparing different compressors.
but this doesnt matter really... 12psi means nothing when comparing different compressors.
Last edited by paulmasoner; 08-26-2010 at 04:22 PM.
#133
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thats a tough one, this was a couple years back. the 3071 i think will hold 10 pounds or so all the way, if setup properly. the smaller turbo had similar characteristics to the greddy snail, kinda peaky/jumpy boost modulation, dropping to 7-8psi maybe at redline
#135
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aw brettus your STILL stuck on that stuff?
over the last 3 yrs or so we've seen dozens and more FI dyno's posted up here. disregarding manufacturer/retailer dyno's(for obvious reasons) how many good dyno's have we even seen? i can count on my 1 or 2 hands how many dyno's I've seen here that were complete, with no hiccups or issues, or tuning failures, etc
fwiw it might have been something he posted in logs or likely video knowing J, i dunno. dont care really anymore. i watched(maybe even took part) the discussion this leads to when it came up before once.
over the last 3 yrs or so we've seen dozens and more FI dyno's posted up here. disregarding manufacturer/retailer dyno's(for obvious reasons) how many good dyno's have we even seen? i can count on my 1 or 2 hands how many dyno's I've seen here that were complete, with no hiccups or issues, or tuning failures, etc
fwiw it might have been something he posted in logs or likely video knowing J, i dunno. dont care really anymore. i watched(maybe even took part) the discussion this leads to when it came up before once.
#136
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Does Jeff play with APV timing when he does his tunes via AccessPort or does he tune around the lean spot at 6000rpm? Because from what I'm reading it sounds like tuning around it might be the best all around general option... you get the low down flow velocity you need while keeping flow up with the opening of the APV higher up. I wasn't planning on installing my blocking plate with the GReddy turbo but this thread has got me thinking.... which could be dangerous haha
#137
Not stuck on anything - just making an observation. If you have the relevant info , I would like to see it .
All 4 FI dynos i've done were without issue so that's one hand almost taken up LOL . But yeah - good point .
then why post ?
over the last 3 yrs or so we've seen dozens and more FI dyno's posted up here. disregarding manufacturer/retailer dyno's(for obvious reasons) how many good dyno's have we even seen? i can count on my 1 or 2 hands how many dyno's I've seen here that were complete, with no hiccups or issues, or tuning failures, etc
.
.
then why post ?
#138
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i dont have anything, i just read what i see on the interwebs
you've done 4 now w/o issue whatever your trick, share it with all the ppl who have made multiple attempts and still dont have a complete dyno...
hmm well... my interest in the car at this point is only theoretical. and even that is pushing it lately. i suppose really its out of sheer f-ing boredom lol. i've cranked down all my hobbies in my life in prep for selling the car to buy a bike and, i dunno whatever. oh and there was that thing i told you about before.. but im too lazy, didnt keep up with the forum when BSE was at the house, so im not gonna bother - sorry for being a bitch for no reason then lol
#139
That and I don't have to rely on anyone else to do my tuning
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had something funny to happen.
I made a slow test run with the apvs's locked open (i think). It felt promising. I only wound it up with 50% throttle and only to 6.5 K.
a/f's looked good, boost held steady, charge temps looked good. --OK
So i let off the throttle and shifted to a higher gear and was going to cruise ( iwas on an interstate entrace ramp).
I glanced at my charge temp gauge (temperure of the air post blower that is almost at the uim/lim junction) and dman!!!! It had jumped 150F to 250F!!!! My boost vacuum gauge was pegged at 30 of vacuum!
WTH!
I quickly switched my water meth back on and temps came right down, vacuum became normal in 5-10 seconds. Engine was fine---but WTH happened?
After scatching my head and not being able to find anything, I tried again at a much less load and the temps shot up AGAIN! But Only to 200F this time- it gained approx 100F degress in 2 seconds after I let off the gas. No Vacuum problems this time.
Something is going on. I had my w/m spraying during these runs. The spray was not on full since it is maf driven and I wasnt at full throttle.
No hiccups, no stumbles, felt good UNTIL i let up off the gas??
I am not doing this again until I find out WTH happened and know a cure.
I hooked my APV back up and this behavior went away.
I believe I am getting blowback some kinda bad?
ANYONE??
OD
I made a slow test run with the apvs's locked open (i think). It felt promising. I only wound it up with 50% throttle and only to 6.5 K.
a/f's looked good, boost held steady, charge temps looked good. --OK
So i let off the throttle and shifted to a higher gear and was going to cruise ( iwas on an interstate entrace ramp).
I glanced at my charge temp gauge (temperure of the air post blower that is almost at the uim/lim junction) and dman!!!! It had jumped 150F to 250F!!!! My boost vacuum gauge was pegged at 30 of vacuum!
WTH!
I quickly switched my water meth back on and temps came right down, vacuum became normal in 5-10 seconds. Engine was fine---but WTH happened?
After scatching my head and not being able to find anything, I tried again at a much less load and the temps shot up AGAIN! But Only to 200F this time- it gained approx 100F degress in 2 seconds after I let off the gas. No Vacuum problems this time.
Something is going on. I had my w/m spraying during these runs. The spray was not on full since it is maf driven and I wasnt at full throttle.
No hiccups, no stumbles, felt good UNTIL i let up off the gas??
I am not doing this again until I find out WTH happened and know a cure.
I hooked my APV back up and this behavior went away.
I believe I am getting blowback some kinda bad?
ANYONE??
OD