Diggs24
Autocross Champion
- Location
- de plains! de plains!
- Car(s)
- 2015 GTI
An IS38 on pump isn't going to be limited on the stock LPFP regardless of 1.8 or 2.0 (since it is the same pump). Once you start tinkering with heavy ethanol is when it starts getting to the edge. If you are going to stick with the IS38 and pump gas then get the MPI in and be done.