Bad Tune or what?
Okay I have a boosted 2000 Civic Si with,
Stock B16A2 Block Bored .20 over SRP 9.1:1 Pistons Eagle H Beam Rods Turbonetics t3/t4 .57 trim .63 a/r Drag exhaust manifold 38mm Cheapo Wastegate - 11 PSI Spring Greddy Bov RC 550cc injectors 2.5" Downpipe 2.5" Exhaust Drag I/C 6.5" height Hondata S300 Walbro 255 The tuner was able to bring out 251 whp on 11 psi but these numbers sounds to low to me. He told me the bearings were going out in the turbo and it was causing me a powerloss but from what I've saw with others setups I should atleast be 270+ whp on 11 psi? What's the problem? Is the tune bad? I'm planning on rebuilding the turbo, getting a full 3" from turbo out, and a new tune and I'm wondering if I should go back to this shop. Heres my dyno sheet. Lemme know what you think! http://i683.photobucket.com/albums/v...os/dyno1-1.jpg http://i683.photobucket.com/albums/v...os/dyno2-2.jpg |
Re: Bad Tune or what?
Let me see a pic of the dyno plot. You can email me the calibration also.
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Re: Bad Tune or what?
from the dyno, looks like something is choking it off up top, it drops boost a bit, but should pull higher than that. numbers seem fine for a 9:1 b16 to me
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Re: Bad Tune or what?
For 9:1 CR, looks right for this turbo size and a Drag log manifold.
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Re: Bad Tune or what?
where was it tuned?
whats your wideband saying idle and in acceleration? |
Re: Bad Tune or what?
The IC is on the smaller side, but should be big enough. The exhaust could be the dealbreaker, unless it's a straight-through muffler. The tuner could believe (like the tuner I know) that B16's love to break stock sleeves, and used a very conservative timing map. But with torque dropping so fast at 7k, it may be a restriction issue somewhere.
Why would you pay all that money for a new exhaust when you can crank boost up to 20psi? If the turbo is indeed blown, it will eventually fail regardless of new exhaust or more boost. FYI I saw a 50hp gain just by replacing a failing ebay turbo with a new turbo (same turbo, same ebay seller), so it's possible the thrust bearing is stealing power. |
Re: Bad Tune or what?
I think the turbo is robbing you of power... on a 11psi and a 57 trim... you should be close to 300whp...
Exhaust is a slight restriction... Replace the turbo and get a new tuner |
Re: Bad Tune or what?
Originally Posted by cleansi
(Post 43923179)
where was it tuned?
whats your wideband saying idle and in acceleration? I don't have a wideband as I just let the tuner use his and figured I didn't need one.
Originally Posted by HiProfile
(Post 43924069)
The IC is on the smaller side, but should be big enough. The exhaust could be the dealbreaker, unless it's a straight-through muffler. The tuner could believe (like the tuner I know) that B16's love to break stock sleeves, and used a very conservative timing map. But with torque dropping so fast at 7k, it may be a restriction issue somewhere.
Why would you pay all that money for a new exhaust when you can crank boost up to 20psi? If the turbo is indeed blown, it will eventually fail regardless of new exhaust or more boost. FYI I saw a 50hp gain just by replacing a failing ebay turbo with a new turbo (same turbo, same ebay seller), so it's possible the thrust bearing is stealing power. I just gave a turbo shop a call and they said it'd be $200 to replace the bearings at the lowest. Thanks for all the help so far guys. Really hoping to figure this out. |
Re: Bad Tune or what?
seems a little low....my # might help stock b16a t3/t4 garrett .63 57 trim. ramhorn, 3inch down pipe and exhaust. made 325whp at 11 psi
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Re: Bad Tune or what?
Originally Posted by sleepencivic
(Post 43927066)
seems a little low....my # might help stock b16a t3/t4 garrett .63 57 trim. ramhorn, 3inch down pipe and exhaust. made 325whp at 11 psi
Even though you have a couple things upgraded you have 75 whp on me with same turbo and psi. |
Re: Bad Tune or what?
this could be a sign of turbo failure. sounds more like the thrust bearings themselves are wearing against the shaft. "blown seals" isn't the only way a turbo can die over time.
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Re: Bad Tune or what?
Originally Posted by TheShodan
(Post 43929166)
this could be a sign of turbo failure. sounds more like the thrust bearings themselves are wearing against the shaft. "blown seals" isn't the only way a turbo can die over time.
I'm taking it down to a turbo shop one of these days when I get it off the car. |
Re: Bad Tune or what?
based on that chart showing boost....once it spools the pressure is steady....so it may be the tune.
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Re: Bad Tune or what?
it might just be the shop... you think thats BAD...
I HAVE. B18A1 SLEEVED 84.5MM 9.5.1 CR ARIES PISTONS EAGLE RODS, Type R head and cams, skunk 2 PRO intake manifold, rpm 68mm throttle body, 770cc injectors. 3 bar map sensor. Turbonetics t3/t4 .57 trim .63 a/r TO4E New... 2.5'' piping with ES tuning muffler. and E cut out. xs power bov tial 38mm wg, sls short ram turbo manifold, P28 on chrome. boosted 12psi ONLY ONLY ONLY ONLY 249WHP. LOL wtf????? fuel 91oct |
Re: Bad Tune or what?
Originally Posted by 424racer
(Post 43930535)
it might just be the shop... you think thats BAD...
I HAVE. B18A1 SLEEVED 84.5MM 9.5.1 CR ARIES PISTONS EAGLE RODS, Type R head and cams, skunk 2 PRO intake manifold, rpm 68mm throttle body, 770cc injectors. 3 bar map sensor. Turbonetics t3/t4 .57 trim .63 a/r TO4E New... 2.5'' piping with ES tuning muffler. and E cut out. xs power bov tial 38mm wg, sls short ram turbo manifold, P28 on chrome. boosted 12psi ONLY ONLY ONLY ONLY 249WHP. LOL wtf????? fuel 91oct |
Re: Bad Tune or what?
Yea that's bad too.
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Re: Bad Tune or what?
Originally Posted by 424racer
(Post 43930535)
it might just be the shop... you think thats BAD...
I HAVE. B18A1 SLEEVED 84.5MM 9.5.1 CR ARIES PISTONS EAGLE RODS, Type R head and cams, skunk 2 PRO intake manifold, rpm 68mm throttle body, 770cc injectors. 3 bar map sensor. Turbonetics t3/t4 .57 trim .63 a/r TO4E New... 2.5'' piping with ES tuning muffler. and E cut out. xs power bov tial 38mm wg, sls short ram turbo manifold, P28 on chrome. boosted 12psi ONLY ONLY ONLY ONLY 249WHP. LOL wtf????? fuel 91oct |
Re: Bad Tune or what?
Is it possible they have the dyno settings all messed up? maybe put it on another dyno to see
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Re: Bad Tune or what?
Originally Posted by Garage 808 Hatch
(Post 43930808)
Is it possible they have the dyno settings all messed up? maybe put it on another dyno to see
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Re: Bad Tune or what?
sorry not to thread jack, i was just telling you how my tune went...
but yeah i say we try another tuner... lol good luck. |
Re: Bad Tune or what?
No it's fine, but yes I'm hoping my power loss is just a combination of maybe a not so great tune with a failing turbo (that I hope can be fixed by being rebuilt?)
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Re: Bad Tune or what?
Any other ideas?
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Re: Bad Tune or what?
go to stop by locash not to far away im sure they will tell you whats going on for free or cheaply....
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Re: Bad Tune or what?
Originally Posted by cleansi
(Post 43940371)
go to stop by locash not to far away im sure they will tell you whats going on for free or cheaply....
Also, would an idle problem directly reflect the tune? While the car is warming up the idle jumps back and forth. |
Re: Bad Tune or what?
Locash is definitely a good tuner. He's a member on here too, "locash"
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