10.3:1 y8 with 14b turbo, advice
08-03-2005, 12:30 PM
#1
0.5 BAR
Thread Starter
Join Date: Oct 2004
Posts: 58
10.3:1 y8 with 14b turbo, advice
Ok so I just purchused ***** 14b turbo, manifold and downpipe. I'm also in the process of buying all the charges pipes, BOV and a JRC "6 FMIC. and some tuner toys 450 injectors.
first question what's the easiest way to go about lowering the boost on a 14b turbo I know there set at 9psi but I'd like to be able to tune it down to 5-6psi for street driving and run 9-10psi only when I'm at the track. I also stupidly built my car more for N/A then boost with it's 10.3:1 compression on OEM pistons and rods. So I know I need a really good quality tune to prevent detonation, I'm really kicking my self for throowing this motor together the way I did but it was a low budget project last summer. But now I crave boost, what do you think the best way to go about making sure my car can handle the up to 10psi, I already got a Uberdata ecu just needs to be tuned and will have the bigger injectors, I know detanation is my biggest enemy right now, so any advice would be greatly appreciated.
Here is my current set up
D16y8
Jg85vt35 Cam
Mild P&P
B18 Throttle Body
custom 2.5" exhaust
2.5"Test Pipe
2.5" resonator
Mugen STYLE Twin Loop Muffler
Shotpeened y8 rods
Knifedged y8 Crank
d16a6 Pistons
z6 tranny
Centerforce Clutch
B&M FPR
Clutchmasters Flywheel
Z6 Tranny
P28 Uberdata ECU with boomsland obd2a to obd1 harness
I will also be running tuner toys 450cc Injectors
Thanks
first question what's the easiest way to go about lowering the boost on a 14b turbo I know there set at 9psi but I'd like to be able to tune it down to 5-6psi for street driving and run 9-10psi only when I'm at the track. I also stupidly built my car more for N/A then boost with it's 10.3:1 compression on OEM pistons and rods. So I know I need a really good quality tune to prevent detonation, I'm really kicking my self for throowing this motor together the way I did but it was a low budget project last summer. But now I crave boost, what do you think the best way to go about making sure my car can handle the up to 10psi, I already got a Uberdata ecu just needs to be tuned and will have the bigger injectors, I know detanation is my biggest enemy right now, so any advice would be greatly appreciated.
Here is my current set up
D16y8
Jg85vt35 Cam
Mild P&P
B18 Throttle Body
custom 2.5" exhaust
2.5"Test Pipe
2.5" resonator
Mugen STYLE Twin Loop Muffler
Shotpeened y8 rods
Knifedged y8 Crank
d16a6 Pistons
z6 tranny
Centerforce Clutch
B&M FPR
Clutchmasters Flywheel
Z6 Tranny
P28 Uberdata ECU with boomsland obd2a to obd1 harness
I will also be running tuner toys 450cc Injectors
Thanks
08-03-2005, 02:16 PM
#3
3.0 BAR
Join Date: Jan 2005
Posts: 2,877
Re: 10.3:1 y8 with 14b turbo, advice
the compression wont be a big problem, look at all the rich kids boosting their stock type aarrggg's.
i would get rid of that twin loop mooogen muffler though. put a straight pipe in its place
i would get rid of that twin loop mooogen muffler though. put a straight pipe in its place
08-03-2005, 02:33 PM
#4
0.0 BAR
Join Date: Mar 2005
Posts: 26
Re: 10.3:1 y8 with 14b turbo, advice
Yeah, I'm kinda like you. I'm interested in a 14b but don't want to be running 8-10 psi daily, especially until I get it tuned. I would like 6 or 7 psi. I was thinking of eliminating the wastegate actuator, and getting an external wastegate.
08-03-2005, 03:08 PM
#5
3.0 BAR
Join Date: Dec 2002
Posts: 3,830
Re: 10.3:1 y8 with 14b turbo, advice
I would try out 10psi with that combo. Hopefully you can find someone in your area who you can trust to have good judgment w/ a street tune.
Considering that your not running an open WG and your exhaust seems to be pretty quiet, it should be relatively easy to hear it ping. Even at WOT.
So dont take that twin loop off just yet
(Although, Id personaly rock a ------- cherry bomb)
Heres how I would start off with the Ign map.
This is just a starter map, and may require some changes. The important part is in the idle area; notice how the idle portion is enlarged so there will be no room for error when setting your timing. Also notice that the last two columns are the same. This is just a habit of mine, as the MAP sensor and Uber will never really peg out on the last column. This way you know for sure what your timing is when/if you max out the MAP sensor. If anything, this smaller turbo may ping a bit in the lower revs since it will build boost so fast. |I would just brake/TQ the car and build boost at progressively higher RPMS (2k, 3k, 3.5k, etc...) and keep an ear out for any ping. If it does, adjust the ign map at the appropriate area.
Good luck.
Dave
Considering that your not running an open WG and your exhaust seems to be pretty quiet, it should be relatively easy to hear it ping. Even at WOT.
So dont take that twin loop off just yet
(Although, Id personaly rock a ------- cherry bomb)Heres how I would start off with the Ign map.
This is just a starter map, and may require some changes. The important part is in the idle area; notice how the idle portion is enlarged so there will be no room for error when setting your timing. Also notice that the last two columns are the same. This is just a habit of mine, as the MAP sensor and Uber will never really peg out on the last column. This way you know for sure what your timing is when/if you max out the MAP sensor. If anything, this smaller turbo may ping a bit in the lower revs since it will build boost so fast. |I would just brake/TQ the car and build boost at progressively higher RPMS (2k, 3k, 3.5k, etc...) and keep an ear out for any ping. If it does, adjust the ign map at the appropriate area.
Good luck.
Dave
08-03-2005, 06:24 PM
#6
0.5 BAR
Thread Starter
Join Date: Oct 2004
Posts: 58
Re: 10.3:1 y8 with 14b turbo, advice
I have a really good tuner he's one of the best if not the rest in Denver.. So if I grap the 450cc injectors, use that uberdata map your showing me to start out with, until I can get it over to have tuned proffesionally. I had a few people telling me my engine at 9psi might not even make it thru the tune. And it kinda freaked me out, I'm kinda considering putting it off a few weeks and just replacing the rods and pistons and installing some arp headstuds. It's something i planed on doing later on but I'd like to wait 6-12months to do it and I'd like to do it with a spare engine while my car is still driving so I only have a day or 2 of downtime while i swap out the engine.
I mean i guess your right thou people turbo Bseries motors all the time and I know the b16a and especially the type r have much higher compession. I think with a good tune and proper fuel delivery i can last a year at 9-10psi
thanks for the input guys keep it comin if ya got it
I mean i guess your right thou people turbo Bseries motors all the time and I know the b16a and especially the type r have much higher compession. I think with a good tune and proper fuel delivery i can last a year at 9-10psi
thanks for the input guys keep it comin if ya got it
08-03-2005, 06:27 PM
#7
0.5 BAR
Thread Starter
Join Date: Oct 2004
Posts: 58
Re: 10.3:1 y8 with 14b turbo, advice
Originally Posted by leed
I would try out 10psi with that combo. Hopefully you can find someone in your area who you can trust to have good judgment w/ a street tune.
Considering that your not running an open WG and your exhaust seems to be pretty quiet, it should be relatively easy to hear it ping. Even at WOT.
So dont take that twin loop off just yet (Although, Id personaly rock a ------- cherry bomb)
Heres how I would start off with the Ign map.
This is just a starter map, and may require some changes. The important part is in the idle area; notice how the idle portion is enlarged so there will be no room for error when setting your timing. Also notice that the last two columns are the same. This is just a habit of mine, as the MAP sensor and Uber will never really peg out on the last column. This way you know for sure what your timing is when/if you max out the MAP sensor. If anything, this smaller turbo may ping a bit in the lower revs since it will build boost so fast. |I would just brake/TQ the car and build boost at progressively higher RPMS (2k, 3k, 3.5k, etc...) and keep an ear out for any ping. If it does, adjust the ign map at the appropriate area.
Good luck.
Dave
Considering that your not running an open WG and your exhaust seems to be pretty quiet, it should be relatively easy to hear it ping. Even at WOT.
So dont take that twin loop off just yet
(Although, Id personaly rock a ------- cherry bomb)Heres how I would start off with the Ign map.
This is just a starter map, and may require some changes. The important part is in the idle area; notice how the idle portion is enlarged so there will be no room for error when setting your timing. Also notice that the last two columns are the same. This is just a habit of mine, as the MAP sensor and Uber will never really peg out on the last column. This way you know for sure what your timing is when/if you max out the MAP sensor. If anything, this smaller turbo may ping a bit in the lower revs since it will build boost so fast. |I would just brake/TQ the car and build boost at progressively higher RPMS (2k, 3k, 3.5k, etc...) and keep an ear out for any ping. If it does, adjust the ign map at the appropriate area.
Good luck.
Dave
08-03-2005, 06:55 PM
#8
3.0 BAR
Join Date: Apr 2004
Posts: 9,800
Re: 10.3:1 y8 with 14b turbo, advice
Originally Posted by leed
Considering that your not running an open WG and your exhaust seems to be pretty quiet, it should be relatively easy to hear it ping. Even at WOT.
tune it rich, take it easy on the timing, you'll be fine.
