93 is the only fuel im going to run, and the three intercooler upgrades are it, no meth or water injection. with those as ground rules its just a question of how i up the power, im staying with the GMPP stainless exhaust and planning on running the extrude honed exhaust manifold, thats it on the exhaust side, then the zzp cold air intake and ls4 throttle body. the tvs is already set up for the ls4 so i wont have to run the adapter plate. If i hold off on the tvs ill still do the bigger throttle body and will need the pcm recalibrated for it. The intercooler mods will be worth down the road so ill probably do them as well. I was just told that its possible to run the tvs and get 30 to 40 more horse than stage 2 just by improving its efficiency. That its just a better blower than the stock unit with stage 2. Im not looking for a single pound of boost more than the 17 or so i get from the stage 2 setup, just to get the extra power from the efficiency boost. I was told the bigger, better designed blower could make the same boost while turning slower, resulting in more power actually reaching the ground.

 

uh...i'm no tvs expert, but the one person down here that was on the tvs and gmpp exhaust went kaboom.

Either way, it really sounds like you need to investigate a little more about the tvs before you attempt, or have a shop attempt to install one with the mods you just stated.

 

The car will actually feel slower with that big of a pulley. Top end will be nice, but you will feel a noticable loss in low end TQ. Will almost feel like a turbo but without the power :/

 

the reason i went with a long tube

 

also, these blocks have been know to handle 25 psi of boost from a turbo, without having any internal work done.

If really what you're looking for is higher than average dyno numbers to shut your buddies up, it would actually be cheaper to just get a 3" exhaust and switch to e85 and just pulley down the m62. That with the ls4 throttle body you have will gain more respect than simply slapping on a bigger supercharger and not wanting it's full potential.

 

im not looking to set any hp records, i just want to get what there is to get out of pump gas, if bolt ons are the best im going to be able to do then I'll tolerate that. Just seems like an underdrive pulley on a tvs should make stock levels of boost while freeing up some parasitic power loss and net me more juice at the wheels, maybe even boost her fuel economy a little. The tvs is also supposed to sound better.

 

depends on your definition of better i like it better because its quieter and a lower tone...but i do still love the scream of a pulley'd m62 at the same time haha

 

GM exhaust will be fine. I run GMPP 2.25 catback with stock manifold. Put down 350, but the straight thru glass packs on the system did fall apart over time, pretty loud now.

 

Yeah I understand. Just letting you know from someone who has one and tried different things with it. At that low boost the car will feel slower. Powerband will be pushed back pretty far. As far as sound, TVS is a lot quieter, if not silent.

 

if you have a loud exhaust that just covers it up...or a stock intake

 

i wouldent do a gm dual pass get a zzp single pass works alot better and looks stock

 

at 17-18 pounds of boost with a tvs the car will run slower? wtf?

 

the stock 3.15 pully will produce 20lbs the car is faster but some thing it feels slower because it dosent hit like a m62

 

The powerband gets pushed so far back, the car will have no ***** down low. Trust me, I ran a larger pulley on one of these before.

The peak HP/TQ number on a dyno might be higher, but overall powerband will suck, IMO. Peak TQ will be pretty high in RPM range.

Just depends what you want out of the car, though. For a DD I wouldn't like it, but for a road race car that is constantly at high RPM, it would fair well.

 

yeah, it does "feel" weaker with the 80mm, but its pushing more boost at every rpm still.
on the super crappy tune i had it would break the tires loose around 3000rpm even when i roll into it from a stop or what ever.

so yeah, you might not feel the power as much down low, but it is still there

 

Im in northeast PA and can handle installing and tuning the car for you no problem. In fact, it can be done in an afternoon easily!

 

true story!

 

sweet BYT, price me up the DP, Option B and zzp stg 3 ic full install then pm me with the number. im thinking 10% over cost on parts, 100 an hour considering ill have a 7 hour drive to get it done. let me know.

 

oh and is it possible to run a smallish pulley on a tvs with a boost limiter so it develops the power curve earlier but can still run on 93?

 

With front mount duel pass and option b but still running 93 why not pulley down a tvs?

 

i know the pcm has the boost limiting table, but i dont remember if it will work at any/all boost pressures, or if past a certain point(i.e. 17psi) it no longer can control it beyond that.



however on 93 with all those mods you should be fine on full boost no water/meth