moabman Posted March 6, 2008 Report Share Posted March 6, 2008 I am definitely enjoying the boost! I have 3.73 gears and when I go to WOT at any speed less than 20, I can spin the tires with ease. In fact, I wonder exactly how the traction control works because I get prolonged wheel spin with pronounced directional drift if I leave it floored. I checked with JDM who did the tune and they said that they positively left the TC active. I haven't gotten the nerve to turn it off yet Of course, this is a twin screw supercharger supposedly made by Lysholm but may actually be built by Eaton for Lysholm. As you can tell from above comments, the low end torque is simply wonderful. Because I have the 5R555 automatic transmission, it is a perfect match. I can't control the RPMs by gear selection as well as with a manual so the wide power band really helps. In addition, this configuration is pretty adiabatically efficient. That's important because I live in Houston so the summer heat can really hurt the performance of roots and centrifugals. BTW it doesn't help the twin screws either but we don't suffer quite as much. The Saleen like the Whipple is quiet. I can hear the blower but not like the factory GT500s. The major difference between mine and the Whipple big boost is the inverted configuration of the Saleen. On mine, the blower is mounted below the inter-cooler so it blows upward through the inter-cooler and then down some long runners to the heads. The throttle valve is located just slightly above the stock position and a long flat snorkel tube channels the air to the inlet of the supercharger. I thought that with the long runners I might notice a slight lag compared to the Whipple but if there is a lag its slight. I should mention that I have only driven a GT with the Whipple High Output package once but the two twin screw based setups seemed pretty comparable. It is a more finished look but if you want to show off that blower better pick the Whipple because you can only see the pulley on mine. My MPG has taken a big hit though....now averaging 14.3 mpg and thats with about 50% highway miles and only an occasional use of the loud pedal. I checked and running at 65 on the highway, I'm getting 22.6 mpg. It seems to use a lot of gas on startup. That's one of my complaints/concerns. Everyone has probably noticed how our cars rev pretty high on cold start. This blower accentuates that. It is actually producing boost at 2000 rpm and my initial idle rev is even higher and longer than it was when the engine was NA. Anyone that has an idea on how to fix this, please let me know. I don't drive my car everyday. In fact I only put on 4500 miles last year. I drive it on average about once or twice a week so I'm worried about those cold starts with the oil all in the pan Even so, I love this mod. It's not for everyone but if you have a GT with the automatic and would like some instant response, give it a look. It really plants you back in the seat very firmly. I'm supposed to be at 425 rwhp and 11 psi boost and I can't imagine what those GT500s with 600 & 700 hp are like. :happy feet: The new throttle body position slightly above the stock position. Kind of hard to see the supercharger isn't it? Easy to see the snorkel tube and runners though. There it is! At least you can see the pulley It is a finished look. No room for a strut tower brace, however. The hood just barely clears it. See - there really is a twinscrew blower in there somewhere Link to comment Share on other sites More sharing options...
This topic is now archived and is closed to further replies.