Bad Tune or what?
#1
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!
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!
Last edited by Hobkins; 11-02-2010 at 08:41 PM.
#3
Honda-Tech Member
Join Date: Jul 2006
Location: CRESWELL, Oregon, 97426
Posts: 5,433
Likes: 0
Received 2 Likes
on
2 Posts
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
#6
Honda-Tech Member
Join Date: Jan 2005
Location: b00sting my D16s, SoWis, USA
Posts: 7,015
Likes: 0
Received 7 Likes
on
5 Posts
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.
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.
#7
Honda-Tech Member
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
Exhaust is a slight restriction... Replace the turbo and get a new tuner
Trending Topics
#8
Re: Bad Tune or what?
I don't have a wideband as I just let the tuner use his and figured I didn't need one.
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.
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.
#9
Honda-Tech Member
Join Date: Apr 2005
Location: ruckersville, va, usa
Posts: 1,220
Likes: 0
Received 0 Likes
on
0 Posts
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
#10
Re: Bad Tune or what?
Even though you have a couple things upgraded you have 75 whp on me with same turbo and psi.
#12
Re: Bad Tune or what?
I'm taking it down to a turbo shop one of these days when I get it off the car.
#14
Honda-Tech Member
iTrader: (1)
Join Date: Nov 2007
Location: Chino, califnornia, USA
Posts: 2,272
Likes: 0
Received 0 Likes
on
0 Posts
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
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
#15
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
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
#17
Honda-Tech Member
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
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
#19
#21
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?)
#24
Re: Bad Tune or what?
Also, would an idle problem directly reflect the tune? While the car is warming up the idle jumps back and forth.