Time to clear up some stuff. The Series 1 develops it'* torque at a LOWER RPM. You get into torque quicker.
This is why a S1 will beat a S2 off the line 9 out of 10 times, stock for stock. Many members on this Forum have experienced it.
The Gen3 Series 1 (94/95) is VERY close to the performance of the S2, and a few of us have beaten S2 cars, stock for stock (Marty and I are two of them).
but the potential is not there with a series 1, especially not with the stock superchargers. The M62 is way too innefficient to compete with the m90
The volumetric efficiency of the 94/95 Gen3 M62 is identical to that of the Gen3 M90'* all the S2 guys here have. The only difference is:
The M90 does NOT outflow the M62 in our application.
The M90 is spun SLOWER so that it produces the SAME. The only difference is the temperature of the boost charge in the manifold of the M62 will be slightly hotter due to the faster spinning SC and heat from compression and friction. The difference is minimal. For instance, I'm still flowing more air with my M62 with a 2.0" pulley than an M90 with a 3.2" pulley would by about 10%. If the M90 pulley'* further down to a 3" pulley, I still flow 3% more. Our crank pulleys are the same diameter.
EVERYTHING available for the Series 2 is available for the Series 1
EXCEPT an intercooler (although a couple have been designed, but never built) and HEADERS, but our exhaust manifolds are vastly superior to begin with, and when properly ported, are nearly as good as headers, negating the need or logic in S2 L67 headers.
Series 1 L67'* can easily achieve low 14 second quarter mile times WITHOUT ANY VALVETRAIN WORK. Low 14'* are obviously not the limit, are they?
My 93 SSEi runs Mid-14'* while breaking traction off the line and at the second gear shift on an NHRA prepped dragstrip. If I could actually hold traction, it would be low-14'* to High-13'* as it sits RIGHT NOW. And I have done no valvetrain work whatsoever. Other than a PCM (readily available), upgrading to the 94/95 Supercharger, and alot of attention to detail on the top end of the engine (porting and polishing the SC, TB, and LIM, also the EM'* as mentioned above), I have done very little to be able to run a 2.0" SC pulley. While my list of mods looks extensive to the casual observer, there really is nothing I would consider MAJOR in my list. And anyone else can achieve the same. Oh, I'm not done yet.
I've found some more DIY power in the Series 1 L67 that I think I'll be unleashing this winter.
It'* also quite possible to 'wake up' the top end of the S1 very similar to the top of the S2. I've done it. And if you ask Black94SSEi, who just had his LIM ported like mine by Billboost last weekend, it woke his top end up as well.
There are disadvantages and advantages to both. It depends on what you want and how you drive. Many misconceptions in this topic certainly needed clearing up though.