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Dyno results from LS6 tb to 90mm ls tb on maggie

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Old 12-08-2012, 11:18 AM
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Default Dyno results from LS6 tb to 90mm ls tb on maggie

So about a month ago my throttle body failed at thunderhill raceway in the middle of a session. Unforntunately i had to have it towed home. However, I had already bought up all the parts to switch my tb over to a 90mm tb (maggie snout, 4 tb bolts, tb harness adaptor, 90mm tb). Since I don't HP Tuners and im not very knowledgeable about tunes, i took it to the person who originally tuned my car. Anyways here is the dynosheet, picker up ~15whp and 7~wtq. i'm now at 461/445. I'm pretty happy with this. Also I don't know that I have ever seen a dyno sheet where the only mod was a tb upgrade.
Old 12-08-2012, 11:24 AM
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Nice gains...does the car feel any different as far as response or up top?
Old 12-08-2012, 11:28 AM
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Wow...look at how your torque falls off after 5000 RPM. Why is that?
Old 12-08-2012, 11:59 AM
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Maggie builds torque in the mid range, not in the top range Fuzzy. Drop off does look a little steep, but nice numbers either way. Good to see just a TB graph up here.
Old 12-08-2012, 02:54 PM
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Now I have to add that to my list of things to do over winter!!
Old 12-08-2012, 03:22 PM
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Originally Posted by FuzzyLog1c
Wow...look at how your torque falls off after 5000 RPM. Why is that?
The blower efficiency. i'm running a 2.6 inche drive pulley so im overspinning the blower by about 9%. They mp112 efficiency really drops off at high RPMs. at 5000 RPM the blower is spinning almost 3x that.

You can see im close to 8 pounds of boost i believe (which is a little above 1.5 (1.54)) and in between 12k-15k rpm blower speed. The blower is <50% efficient.

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Old 12-08-2012, 03:35 PM
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Do you have any other mods? With the 2.6 are you getting any belt slippage? I'm going with 2.6 and kinda worried bout slippage, thanks
Old 12-08-2012, 04:49 PM
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Originally Posted by GFallen
Do you have any other mods? With the 2.6 are you getting any belt slippage? I'm going with 2.6 and kinda worried bout slippage, thanks
If i was getting slippage you would see it in the dyno graph generally. I'm running a 101.5 inch accessory belt green back gates belt which helps slip. I have a meth kit as well as a volant air intake
Old 12-08-2012, 04:59 PM
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A fellow member used the tensioner pulley from a v2. I was thinking about using this combo but still debating.
Old 12-08-2012, 05:05 PM
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Originally Posted by GFallen
A fellow member used the tensioner pulley from a v2. I was thinking about using this combo but still debating.
Magnuson also have a beefier 8 rib tensioner now too.
Old 12-08-2012, 05:07 PM
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I used the v2 tensioner pulley.. Overdriven balancer and 102 belt.. After about 500 miles the belt stretched and its slipping like crazy. 2.6 is gonna slip no matter what unless u get a whole 8rib set up
Old 12-08-2012, 05:21 PM
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You still need the green belt with the 8 rib. K081020hd. That's the belt I'm running. Full innovators west(10% overdrive) setup with ecs tensioner and only a 2.7 pulley. That belt took me and another person to pry on.
Old 12-20-2013, 09:53 AM
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Thread resurrection, has anybody tested a 102mm tbody TVs stock?



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