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.

 

Nice gains...does the car feel any different as far as response or up top?

 

Wow...look at how your torque falls off after 5000 RPM. Why is that?

 

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.

 

Now I have to add that to my list of things to do over winter!!

 

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.

 

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

 

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.

 

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

 

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.

 

Thread resurrection, has anybody tested a 102mm tbody TVs stock?