Forced Induction Discussion of turbos , superchargers , and nitrous upgrades on the G35

Tell us how your FI behaves

Old Jan 30, 2007 | 05:33 PM
  #31  
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Originally Posted by booger
Im not sure what TT set up you have , but I find it real f-cking funny that there are guys that claim more than you with a Vortech SC at the same psi level . Most of the ones Ive seen post with 10psi like your self . Post up 400 to 480psi on 10psi . And there just isnt any chance in hell a SC is going to make the same hwp as a TT at the same psi level .
Way back when I was running, 442@9psi, although that was on the much maligned dynopack.
 
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Old Jan 30, 2007 | 06:00 PM
  #32  
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I didn't forget the review, I just need to plan the installation around the same time I do my other upgrades.

Booger what can I say except it's been real quiet without you...LOL I suppose your coming back with a BANG!!.

You may have seen my thread on my350 which one operator had me at 340and stated that was at 16psi so I called him yesterday and he said no it was at 9psi and he dynoed it the wrong gear and did not push it past 6200rpm I was like why even do it then, he said it was because he wanted to see what the AF's were only.....need I say more
 
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Old Jan 30, 2007 | 06:45 PM
  #33  
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I made 407whp at 7.6psi with my APS TT.
 
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Old Jan 30, 2007 | 07:00 PM
  #34  
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I had a stage 4 Stillen SC before the Greddy TT kit.

The Stillen has good torque right off the line but it's very easy to control. It's a lot like a good V8. Tons of fun, great sound but still stable due to it building boost as you go up in rpm.

The Greddy TT takes a lot more to master. It spools up so fast and makes so much power it's very easy to get sideways when you don't want to. 1st gear is useless unless you are very gradual with it. 2nd gear is not too bad but if you are on it you will loose traction very quickly and spin through most of it. 3rd gear is the rocket gear because you have traction (as long as it's completely dry). It was raining today so every gear can get you sideways.
 
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Old Jan 30, 2007 | 07:29 PM
  #35  
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I agree with the traction issues as I decided to floor it coming off an on ramp in 3rd, thinking of course that because I was in 3rd it should grip but with the little drizzle which was floating down I went sideways and if not for the VDC kicking in I would have hit the wall.
Learnt my lesson fast, not to floor in any gear when it's wet
 
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Old Jan 30, 2007 | 07:59 PM
  #36  
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With my Vortec at 13 to 14.9psi and the 3.5 rear end . Traction in 1st or 2nd is useless . I can make it past 1/3 throttle . 3rd gear isnt much better when cooler than 60 degrees out . My MPG sucks all the time . A better EMU and it will get better
 
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Old Jan 30, 2007 | 08:25 PM
  #37  
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Wow, pretty old thread, I've driven a vortech and ridden in a stillen, had a TN ST and now a built TT.

Descriptions for lack of better words... you really have to drive or ride in one to fully understand the differences...

Vortech = like stock down low, but once you start getting into boost it gets faster RELATIVELY slowly.... 7lbs no first and second

Stillen = like stock all through the powerband imho very linear feel just faster than stock.... 6 +-0.5lbs boost, no first not much second, can still spin some in 3rd....

TN = Down low exactly like stock, once you floor it, you're like HEY wth? Nothing's happening for a split second and bam!! It builds boost relatively quick.... I ran 11.5lbs for a while... No traction in 1st but 2nd no problem because of my setup...

Greddy TT with 8.6 CR motor = Down low its sooooo slow, less "peppy" than stock, stomp the gas and I get the same wth? Nothings happening, but it will hit me slightly faster I am however, for the time being only running stock boost 5.5-6lbs..... well see how it feels once I up the boost..... Oh and I have no traction problems for now in 2nd because I have heavy stock weight rims and run 285s and a 3.3 FD
 

Last edited by 2slo2bfurious; Jan 30, 2007 at 08:28 PM.
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Old Jan 30, 2007 | 08:38 PM
  #38  
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stock vortech setups don't do a whole lot. They'll make you feel like you got ripped off cause you were expecting more. The power comes on too late and there's not much of it

Upgraded vortechs start to have some ***** though

when I had my initial 3.12 pulley setup during the summer (110-115 degrees outside) making 370whp (dynodynamics, not dynojet whp) it added some grunt to the low end (about 30-40tq). The power comes on earlier which makes a noticable difference. As you held the gas down, the power would swoop in hard and by 4500 you were really feeling some decent thrust - about as much as I'd ever felt in my dad's C6 vette as far as forward G forces.

shortly after, I upgraded to the 2.87 pulley making 390whp (dynodynamics, not dynojet whp) and I immediately noticed the power coming on sooner yet again. It's a snappy amount of power and when you got to 4500rpms and upward it hit harder than before

Next the weather started cooling off to 50-70 degrees.I added higher flowing cats, ignition, CAI, better tune and fuel setup making around 420-430 (dyno dynamics, not dynojet whp) initailly it started getting a bit scary because it was just an anvil of power that'd explode from the midrange and up


to me, driving the vortech setup feels more exponential than linear as far as the seat of the pants feel with the forward G forces. You get a similar rush between 5000-6600 rpms as you would in a turbo car between 2500-4000 rpms.

when you look at dynocharts with most cars, tq drops as it approaches redline and the hp starts to level out. When the hp levels out then the amount of thrust you're feeling is really just the change in speed because as the rpms go up, the mph goes up

when the tq stays flat while rpms and hp rise, you not only feel the rush of going fast in mph, but the acceleration is also staying strong
 

Last edited by sentry65; Jan 30, 2007 at 08:51 PM.
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Old Jan 30, 2007 | 08:44 PM
  #39  
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Originally Posted by sentry65
to me, driving the vortech setup feels more exponential than linear as far as the seat of the pants feel with the forward G forces
Took the words out of my mouth... that's how I'd describe a vortech...
 
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Old Jan 30, 2007 | 10:17 PM
  #40  
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Originally Posted by 2slo2bfurious
Wow, pretty old thread, I've driven a vortech and ridden in a stillen, had a TN ST and now a built TT.

Descriptions for lack of better words... you really have to drive or ride in one to fully understand the differences...

Vortech = like stock down low, but once you start getting into boost it gets faster RELATIVELY slowly.... 7lbs no first and second

Stillen = like stock all through the powerband imho very linear feel just faster than stock.... 6 +-0.5lbs boost, no first not much second, can still spin some in 3rd....

TN = Down low exactly like stock, once you floor it, you're like HEY wth? Nothing's happening for a split second and bam!! It builds boost relatively quick.... I ran 11.5lbs for a while... No traction in 1st but 2nd no problem because of my setup...

Greddy TT with 8.6 CR motor = Down low its sooooo slow, less "peppy" than stock, stomp the gas and I get the same wth? Nothings happening, but it will hit me slightly faster I am however, for the time being only running stock boost 5.5-6lbs..... well see how it feels once I up the boost..... Oh and I have no traction problems for now in 2nd because I have heavy stock weight rims and run 285s and a 3.3 FD

Guys, can you clarify what you mean by the gears being useless. Is it that under WOT you will loose traction, or is it that you must feather the throttle until you are passed 2nd or 3rd gear? Or something else?
 
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Old Jan 30, 2007 | 10:38 PM
  #41  
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Originally Posted by mooka
Guys, can you clarify what you mean by the gears being useless. Is it that under WOT you will loose traction, or is it that you must feather the throttle until you are passed 2nd or 3rd gear? Or something else?
Yes ...useless...spinning tires...no traction !!!
 
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Old Jan 30, 2007 | 10:38 PM
  #42  
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Originally Posted by mooka
Guys, can you clarify what you mean by the gears being useless. Is it that under WOT you will loose traction, or is it that you must feather the throttle until you are passed 2nd or 3rd gear? Or something else?
Correct... no traction at wot...
 
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Old Jan 30, 2007 | 11:23 PM
  #43  
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when launching i would not even bother reving, just do normal launch and i can fell myslef sitting there for atleast half a second. wider tires does help a lot. I've noticed that i dont loose traction anymore with 285s in the rear (without reving before take off of course).
 
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Old Jan 31, 2007 | 01:04 PM
  #44  
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Originally Posted by booger
How much whp are you TT guys making on 10psi .
449rwhp. Some footage of it at the track, without traction:

http://video.google.ca/videoplay?docid=3419807732199951179
Need any slicks? FI completely transforms this car into another beast.
 
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Old Jan 31, 2007 | 01:38 PM
  #45  
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403whp at 8psi.




 
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