Official STS Rear Mount Turbo Discussion Thread
01-27-2008, 10:22 AM
#1081
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/\ FWIW you don't really loose that much power, It's like having the MREV2, the power just shifted a little early. If I'm not mistaken, he hit his Peak HP at around 6000rpm with the old piping, and now he hit Peak HP at around 5600-5700rpm. I think it is better coz the power is very usable on street driving plus most shop suggest to ship around 6000rpm when FI and stock block anyways.
Here, this will give you an Idea since goosegoose graph is very close to mine. You can see that I hit Peak HP arond 5650rpm
Here, this will give you an Idea since goosegoose graph is very close to mine. You can see that I hit Peak HP arond 5650rpm
Last edited by athenG; 01-27-2008 at 10:25 AM.
01-27-2008, 10:40 AM
#1083
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I found Goosegoose dyno..
Both of us still have stock CAT so that could be the bottleneck on the upper rpm.
Originally Posted by MRC Motorsports
The spool time on the Automatic car acutally seemed better than the 6MT car on the road. The power loss at higher boost levels is most likely due to several reasons.
1) The stock cats and exhaust are restricted in flow at this boost level, the set up is not the most efficient way to turbo a car you know.
2) The New intake piping runs closer to the auto tranny and cats and does absorb alot of heat. The timing map I had to run was much less aggressive than the previous map, especially around the peak TQ area.
3) The exhaust gasses going to the turbo, if allowed to flow better with an aftermarket exhauste, would most likely aid in spool up time.
4) larger intercooler couldn't hurt..
Another facotr is Auto cars are much harder to dyno consistantly as far as boost spooling..
1) The stock cats and exhaust are restricted in flow at this boost level, the set up is not the most efficient way to turbo a car you know.
2) The New intake piping runs closer to the auto tranny and cats and does absorb alot of heat. The timing map I had to run was much less aggressive than the previous map, especially around the peak TQ area.
3) The exhaust gasses going to the turbo, if allowed to flow better with an aftermarket exhauste, would most likely aid in spool up time.
4) larger intercooler couldn't hurt..
Another facotr is Auto cars are much harder to dyno consistantly as far as boost spooling..
Both of us still have stock CAT so that could be the bottleneck on the upper rpm.
01-27-2008, 11:24 AM
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Do you think the nismo mid pipe is hurting your spool? Teg hit 10psi at 3700rpm and I see your Peak TQ at 4600rpm.
It think Daniel should add all of this Dyno on the first page coz after awhile it is hard to find. Goosegoose dyno is on page 12 (i think).
It think Daniel should add all of this Dyno on the first page coz after awhile it is hard to find. Goosegoose dyno is on page 12 (i think).
01-27-2008, 11:25 AM
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Originally Posted by athenG
Do you think the nismo mid pipe is hurting your spool? Teg hit 10psi at 3700rpm and I see your Peak TQ at 4600rpm.
01-27-2008, 11:48 AM
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Originally Posted by athenG
Do you think the nismo mid pipe is hurting your spool? Teg hit 10psi at 3700rpm and I see your Peak TQ at 4600rpm.
In a sense I think the larger midpipe does hurt my spool up time because it is just a larger heat exhanger than the stock mid pipe. However, I think it does a better job of getting exhaust gases to the turbine but at the expense of losing more heat to the atmosphere. I believe heat management (whatever that may be) is the key to achieving faster spool with our kits. Also that is using the utec BCS which the map may or may not have been adjusted for the best spool up rate. I am going to replace it with a the HKS EVC shortly. Also, I suspect that I have a boost leak somewhere...my idle sucks and that dyno chart looks odd.
Originally Posted by athenG
It think Daniel should add all of this Dyno on the first page coz after awhile it is hard to find. Goosegoose dyno is on page 12 (i think).
Originally Posted by goosegoose
This nismo mid pipe interests me as well. Do you have any specs on it?
Best bet would be to go to an exhaust shop and have them bend a mid pipe for ya. I should have done that but oh well.Oh yeah forgot that I also have the nismo Y pipe on.
**Edit
I just bought a HKS EVC 6 so I am giving up on the utec BCS. Maybe this will help with spooling like it helped Daniel. Guess I am going to have to go back to SGP to get tuned after all.
Last edited by Ahsmo; 01-27-2008 at 01:29 PM.
01-28-2008, 10:44 AM
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It is really hard to catch the sound on video. The video don't do justice
There are some videos on the first few page. I guess maybe because you have a full upgraded exhaust. I still have stock exhaust and CAT and mine is pretty quiet and I love hearing my Turbo spool with window up or down. I can even hear the turbo whine without hitting positive boost or just cruising.
There are some videos on the first few page. I guess maybe because you have a full upgraded exhaust. I still have stock exhaust and CAT and mine is pretty quiet and I love hearing my Turbo spool with window up or down. I can even hear the turbo whine without hitting positive boost or just cruising.
01-28-2008, 10:54 AM
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Originally Posted by athenG
It is really hard to catch the sound on video. The video don't do justice There are some videos on the first few page. I guess maybe because you have a full upgraded exhaust. I still have stock exhaust and CAT and mine is pretty quiet and I love hearing my Turbo spool with window up or down. I can even hear the turbo whine without hitting positive boost or just cruising.
There are some videos on the first few page. I guess maybe because you have a full upgraded exhaust. I still have stock exhaust and CAT and mine is pretty quiet and I love hearing my Turbo spool with window up or down. I can even hear the turbo whine without hitting positive boost or just cruising.I think John may have dynamatted the inside of his rear and significantly reduced the cabin noise. Maybe he'll chime in here