My car has been converted to RWD so I'm not stock weight. But my interior is still stock, and still has the same power/heated/leather seats, full carpet, sunroof, etc. I also have a Tequipment roll bar installed.

 

That's a scorcher of a 60-130! Congratulations.

 

You need pressure differential across the turbine to creat rpm's to make boost. So, if you can't make boost, you're not generating enough rpm in the turbo. To better that, decrease the pressure after the turbo. Try a larger downpipe, low restriction exhaust, heck, pull the exhaust off completely and go try it.
You my also be running into a w/g that's opening on you. If you have a .7 bar spring in your w/g and you're running electronic w/g control, you'll still blow the valve open at around 2 bar, 28-29psi even with the wg controller wide open.
If you're running too rich, it'll lower the cfm's going through the turbo, and decrease the boost. Check your a/f's.
Pressure test the intake. make sure it'll hold about 5-10psi more than the boost you're planning on running. Do it from the inlet of the turbo so you're checking the entire system, including the bov's.
Good luck on that

 

That's amazing fast! Very impressive ! What is weight lose if you convert AWD to RWD? Scott hava you ever tried from 0~187mile(0~300km)? Because a swiss tuner's SPR1 is able to reach 0~ 300km at 19 seconds. I bet your car would be faster than that!

 

This is from Sportec and has never been tested or validated independently, it is the tuner's claim. That car also has extensive aerodynamic and gearbox modifications as well.

 

only 73 lbs

 

Wow, seriously! The driveshaft, viscous coupler, front diff and axles only weigh 73 pounds? I'm impressed.



Jeff

 

Yep. 73 lbs. Confirmed by quite a few members of this forum.

 

i would guess his car would reach that in 15-17 seconds. Assume he is at 145 after 10 seconds.

 

http://tw.pg.photos.yahoo.com/ph/aw6...cd.jpg&.src=ph



Yes it's Sportec SPR1 which is claimed to have more than 800 CHP and it has some very interesting set up like dual throttle bodies. However, like you said no one has seen its tested performance data. I think either Mark or Scott's would be faster than 19 sec from 0~187mile.

 

Thank you Joetwint and MidnighTT! 73 LBs is actually not that much though comparing the weight loss between TT and GT2.

 

Scott's car would blow the SPR1 away. No contest. (And I'm a huge Sportec fan)

 

I love that car.... You have to remember though that this car is making 800bhp + on shell V power (equivalent of 96 in america), i expect with race fuel it would be very near scotts engine perhaps in terms of power.

best,
adam

 

Interesting to me is that, given the 'money is no object' approach to that car, they retained the factory exhaust manifolds.



This site has good high-res pics:

http://www.rsportscars.com/eng/cars/sportec_spr1.asp

Jeff

 

SPR1 is prohibitively unattainable . European tuners tend to modify factory header rather than redesign a set of new stainless headers for the reliability reason. They might think factory cast iron headers is more durable than those aftermarket stainless units.

However, SPR1's solution such as dual injectors and throttle bodies for extra air and fuel supply is quite creative.