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Finally a Greddy turbo AP1 1/4 mile pass

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Old 07-15-2008, 08:26 AM
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Not bad, the only time I took my car to the track I ran a 13.5 at 107 spinning all the way through 3rd, not a greddy kit but 300whp. Was a nice day but 5000ft altitude.
Old 07-15-2008, 11:15 AM
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Yeah, I am going to get retuned within the next week or so. I got rid of the crank case to air intake tube and just put a steel mesch filter on the crank case to help vent it. For soem reason I was having oil leaking out of the oil filler cap. I have a krank vent installed on the pvc valve line but that didnt stop it. Hopefully by having the crank case vented it will be solved. I swapped out the worm clamps with t bolt clamps and noticed that there was some oil residue on the inlet side of the fmic. That will not happen now.
Old 07-16-2008, 09:12 AM
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The real problem seems to be the amount of power not the 1/4 mile time. With my Comptech I was making 308 hp with the stock 5.5 psi pulley and ran 13.7 with no good launches (either bogging or wheel hopping on the rev limiter). So 13.6-13.7 on 300 whp doesn't surprise me. What does surprise me is that it only makes 300 on 9-10 psi of boost. It should be more like 350-400.
Old 07-16-2008, 09:26 AM
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Originally Posted by MrHonda,Jul 16 2008, 09:12 AM
The real problem seems to be the amount of power not the 1/4 mile time. With my Comptech I was making 308 hp with the stock 5.5 psi pulley and ran 13.7 with no good launches (either bogging or wheel hopping on the rev limiter). So 13.6-13.7 on 300 whp doesn't surprise me. What does surprise me is that it only makes 300 on 9-10 psi of boost. It should be more like 350-400.
Not with the greddy kit, that thing is forcing air through something the size of a water hose. just not a very big kit. around the low 300s are normal for the kit it seems by the people the post on this site.
Old 07-16-2008, 10:55 AM
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I think people have to get over the fact that the greddy kit produces 300hp. Its not suprising, its a small turbo and thats what it was designed for. Slap a GT30+ and sure you'll be making 350+ but again thats NOT the turbo that comes with the greddy kit
Old 07-16-2008, 11:00 AM
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Think of it this way. The turbo will move a specific mass of Air based on its turbo compressor map. If you get a small turbo, you can only move a specific volume of Air and it is that mass of air that generates your additional HP. So the fact that it can generate a Large volume of air at the start is great and makes that Huge low end torque in the kit. But then you get into the efficency and max flow of the turbo once you push it past that your just heating air more and more as you compress it. Bottom line, the turbo was selected to give the torque curve you see and the HP level that Greddy ended with (max out really at 300 HP) To get 350-375 you would have to go to something like a GT30 at 8-10 psi of boost.

The turbo guys running the inlinePRO's can give you more on the actual max HP of the Turbos and what would be best in there opinions.

Lucky7s
Old 07-16-2008, 12:00 PM
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Originally Posted by Lucky7s,Jul 16 2008, 11:00 AM
Think of it this way. The turbo will move a specific mass of Air based on its turbo compressor map. If you get a small turbo, you can only move a specific volume of Air and it is that mass of air that generates your additional HP. So the fact that it can generate a Large volume of air at the start is great and makes that Huge low end torque in the kit. But then you get into the efficency and max flow of the turbo once you push it past that your just heating air more and more as you compress it. Bottom line, the turbo was selected to give the torque curve you see and the HP level that Greddy ended with (max out really at 300 HP) To get 350-375 you would have to go to something like a GT30 at 8-10 psi of boost.

The turbo guys running the inlinePRO's can give you more on the actual max HP of the Turbos and what would be best in there opinions.

Lucky7s
The larger turbos are alot more efficient on the higher side. example. i just bought a PT67, going for over 600whp. but to get that im changing to rev limit to 10,500. But again, the bigger tubo works better with high rpms for the S
Old 07-16-2008, 03:47 PM
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I will say, my car is a beast off the line, then gets not soo exciting around 3rd gear............., but on the street I would rather have the advantage from 0-60 then 80-+mph...........
Old 07-16-2008, 07:08 PM
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I just cant wait until I get mine tuned. As of right now my car actually feels faster at like ~3/4 throttle than it does at WOT, just seems to flood it out almost. Plus there seems to be a huge burst of torque and power at ~4k but then above ~6-7k it really falls flat on its face sometimes. I know this is just how the basemap usually runs and the "dip" everyone talks about, but it is very annoying.
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