Questions for the turbo dudes!
Questions for the turbo dudes! Since Ive never driven any type of FI car, I gots me a few of them there questions.
Is it normal for the car to sound like its running on 7 cylinders? Its got that funny blub exhaust.
How much of a difference is 6 PSI from n/a? I have a 9 psi spring, but I figure due to the FMIC and 3" piping, thats why Im seeing 6 at the intake. I feel it pull, but not like I though it would. I plan to run 10 psi. I am on a very rough tune. Base changes to the VE (2 bar SD system) and a borrowed timing table
Will a dialed in tunes make that much of a difference?
Bucking... I have 60#ers and I have bucking while crusing.. Is it a bad IFR table (I used the spreadsheet for 60s, but I have a BRFPR and I only see ~48 PSI while crsuing) or too much timing? My WB shows ~14.8-15.0 while crusing.
Any special tuning need done to the IFR table or anything for a BRFPR?
Im sure Ill have more Qs.
Is it normal for the car to sound like its running on 7 cylinders? Its got that funny blub exhaust.
How much of a difference is 6 PSI from n/a? I have a 9 psi spring, but I figure due to the FMIC and 3" piping, thats why Im seeing 6 at the intake. I feel it pull, but not like I though it would. I plan to run 10 psi. I am on a very rough tune. Base changes to the VE (2 bar SD system) and a borrowed timing table
Will a dialed in tunes make that much of a difference?Bucking... I have 60#ers and I have bucking while crusing.. Is it a bad IFR table (I used the spreadsheet for 60s, but I have a BRFPR and I only see ~48 PSI while crsuing) or too much timing? My WB shows ~14.8-15.0 while crusing.
Any special tuning need done to the IFR table or anything for a BRFPR?
Im sure Ill have more Qs.
Originally Posted by Country Boy
Since Ive never driven any type of FI car, I gots me a few of them there questions.
Is it normal for the car to sound like its running on 7 cylinders? Its got that funny blub exhaust.
How much of a difference is 6 PSI from n/a? I have a 9 psi spring, but I figure due to the FMIC and 3" piping, thats why Im seeing 6 at the intake. I feel it pull, but not like I though it would. I plan to run 10 psi. I am on a very rough tune. Base changes to the VE (2 bar SD system) and a borrowed timing table Will a dialed in tunes make that much of a difference?
Bucking... I have 60#ers and I have bucking while crusing.. Is it a bad IFR table (I used the spreadsheet for 60s, but I have a BRFPR and I only see ~48 PSI while crsuing) or too much timing? My WB shows ~14.8-15.0 while crusing.
Any special tuning need done to the IFR table or anything for a BRFPR?
Im sure Ill have more Qs.
Is it normal for the car to sound like its running on 7 cylinders? Its got that funny blub exhaust.
How much of a difference is 6 PSI from n/a? I have a 9 psi spring, but I figure due to the FMIC and 3" piping, thats why Im seeing 6 at the intake. I feel it pull, but not like I though it would. I plan to run 10 psi. I am on a very rough tune. Base changes to the VE (2 bar SD system) and a borrowed timing table
Will a dialed in tunes make that much of a difference?Bucking... I have 60#ers and I have bucking while crusing.. Is it a bad IFR table (I used the spreadsheet for 60s, but I have a BRFPR and I only see ~48 PSI while crsuing) or too much timing? My WB shows ~14.8-15.0 while crusing.
Any special tuning need done to the IFR table or anything for a BRFPR?
Im sure Ill have more Qs.
The exhaust note is different; mine sounds a little strange when decelerating. It sometimes backfires too (still tuning).
You should feel noticeable difference at 6 psi with a good timing table. Mine was a dog at 5 psi until I upped the timing a bit. Then it would spin in 2nd just pushing the pedal down. I will let you know if a dialed in tune makes a difference when I get my new WG. What compression ratio are you at?
Your car should not buck, I have 42 lbers and the car does not buck at all.
I cant even break the tires loose... yet 
I have forged flat tops with 2cc reliefs, stock 6.0 heads and 02 MLS gaskets. I figure its around 9-9.2:1.
At WOT, Im seeing 11:1 also.
I have forged flat tops with 2cc reliefs, stock 6.0 heads and 02 MLS gaskets. I figure its around 9-9.2:1. At WOT, Im seeing 11:1 also.
I was thinking about this... Going back to my mechanical roots and forgetting about the FI part... I think its a dead cylinder. Why is unknown. Im not reaching full spool untill about 4000 RMPs, maybe a little more on a .96AR. Also, even WOT, didnt scream like normal. Its got that dead cylinder blurb. At 6-7 psi, it just speeds up like n/a, even in first. It still wont turn the tires loose in first gear when it spools. Also, my LTFT on B1 is +12% and B2 is 0...
I keep this updated tomorrow as its too late to troubleshoot now since I live in an apt. This is going to bug me all night now.
I keep this updated tomorrow as its too late to troubleshoot now since I live in an apt.
This is going to bug me all night now. ahh the joys of FI....especially turbocharged...headaches aplenty.
I share most of these problems with you. No power from 0-5psi and then it really doesn't haul after that...just "goes" Boost builds real fast too up until 9psi, so I'm lost. Tune looks great, got great timing, excellent A/F and no KR.
I'm going to pressure test my IC tubing from the outlet of turbo to right before the TB. If no leaks pop up there, the intake manifold will be coming off for O ring replacements and all vacuum lines post TB will be checked and replaced.
I'll also be taking my WG apart to see if the internals are jacked up.
Best way to describe this situation, my car is rejecting the turbo implant
I share most of these problems with you. No power from 0-5psi and then it really doesn't haul after that...just "goes" Boost builds real fast too up until 9psi, so I'm lost. Tune looks great, got great timing, excellent A/F and no KR.
I'm going to pressure test my IC tubing from the outlet of turbo to right before the TB. If no leaks pop up there, the intake manifold will be coming off for O ring replacements and all vacuum lines post TB will be checked and replaced.
I'll also be taking my WG apart to see if the internals are jacked up.
Best way to describe this situation, my car is rejecting the turbo implant
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...something is amiss... 18deg should pull pretty well. I guess you need to do the dreaded leakdown. Have you seen ANY KR? That bucking sounds like lean bucking. I have a tune with 60's but it's based on a more normal 58-59psi.... Would your cruise AFR get back inline if you ran up your rail pressure?
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Originally Posted by frcefed98
Best way to describe this situation, my car is rejecting the turbo implant
and go with something else. This wouldn't be your first time. J/K and I hope you get it figured out. I can only imagine trying to upgrade to something better and and having it not work as good as before. 1 step forward and 2 steps back.
Originally Posted by frcefed98
ahh the joys of FI....especially turbocharged...headaches aplenty.
I share most of these problems with you. No power from 0-5psi and then it really doesn't haul after that...just "goes" Boost builds real fast too up until 9psi, so I'm lost. Tune looks great, got great timing, excellent A/F and no KR.
I'm going to pressure test my IC tubing from the outlet of turbo to right before the TB. If no leaks pop up there, the intake manifold will be coming off for O ring replacements and all vacuum lines post TB will be checked and replaced.
I'll also be taking my WG apart to see if the internals are jacked up.
Best way to describe this situation, my car is rejecting the turbo implant
I share most of these problems with you. No power from 0-5psi and then it really doesn't haul after that...just "goes" Boost builds real fast too up until 9psi, so I'm lost. Tune looks great, got great timing, excellent A/F and no KR.
I'm going to pressure test my IC tubing from the outlet of turbo to right before the TB. If no leaks pop up there, the intake manifold will be coming off for O ring replacements and all vacuum lines post TB will be checked and replaced.
I'll also be taking my WG apart to see if the internals are jacked up.
Best way to describe this situation, my car is rejecting the turbo implant
Originally Posted by Frost
...something is amiss... 18deg should pull pretty well. I guess you need to do the dreaded leakdown. Have you seen ANY KR? That bucking sounds like lean bucking. I have a tune with 60's but it's based on a more normal 58-59psi.... Would your cruise AFR get back inline if you ran up your rail pressure?
Couldnt be a lean buck if the WB AFR is 14.7-14.9 at cruise, I dont think. The WB shows all is good. Im thinking the bucking could be from a dead cylinder lighting off...
Originally Posted by bowtieman81
Ya, something is not right. You should easily spin the tires with 18 degrees timing.
I had a fouled plug that was giving me trouble, maybe start there.
I had a fouled plug that was giving me trouble, maybe start there.
I did find something interesting... Im blowing holes in my TB.. lol ported and epoxied TBs arent good for FI
I think 48 PSI and 14.8-15.0 while crusing sound just a tad lean. Especially the FP. I would definatley check for a bad or fould plug first. Try pulling one wire at a time and see if the idle drops any.
My procharger set up was mint after I went with the SDCE setup, just ran out of blower and patience LOL. Figured TURBO, hell that'll do it for sure...been fighting with it for two years
Boils down to time, i'm trying to keep it on the road since its my DD for about one more week...that takes away wrenching time to figure stuff like this out. Tune is there though. Wish I had a stenod I could drop my car off at and pick it up making 1 billion hp
Im about this . close to selling it all LOL.
Keep chippling away at it carl you'll get it.
Boils down to time, i'm trying to keep it on the road since its my DD for about one more week...that takes away wrenching time to figure stuff like this out. Tune is there though. Wish I had a stenod I could drop my car off at and pick it up making 1 billion hpIm about this . close to selling it all LOL.
Keep chippling away at it carl you'll get it.
Originally Posted by Country Boy
Whats a good cruise AFR?
Cruise afr is 14.6, which is what the computer will command. You can change that if you want, but I don't see why.
I would recommend changing your PE versus TPS engagement if you have not done so.