i applied two weeks ago and im waiting for the decision... how long did it take to get yours? i think it helps a lot.. like 80 percent of the kids at least who have done it the last 3 years ended up getting into penn
M&TSI has no bearing on your admission to Penn, or M&T for that matter. M&TSI is for your own benefit... if you want to see if the combination of business and engineering at Penn is really something you want to venture into. A lot of students who do M&TSI are fairly strong students to begin with, so the entire pool is already a bit self-selective.
But, just to make it clear, M&TSI doesn't have any impact on your application.
Applying for M&TSI shows a general interest in both the subject areas and the school. I could see admissions officers looking favorably at this, but it will not make or break your chances.
I attended M&TSI last summer and am now going to Wharton (didn't apply to M&T). You can PM me if you have any questions about M&TSI, pros, cons, and how it correlates to Penn admissions the next year.
going to m&tsi certainly shows that you have a vested interest in their program, so i can't see how it wouldn't be a positive addition to your app. anyway i got accepted too so i'll see you in july!