2.0L LSJ Performance Tech 205hp Supercharged SS tuner version. 200 lb-ft of torque.

My M62 E85 car will wax the floor vs most TVS cars on gasoline...

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Old Oct 13, 2009 | 03:24 PM
  #151  
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Old Oct 13, 2009 | 03:50 PM
  #152  
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Originally Posted by Tennpenn83
of course you could. but it will still ramp the boost (although much quicker) instead of making BAM! 16psi like the m62.

most poeple that have gotten the tvs (myself included) have only been on the stock pulley. i watch the boost gauge make 15, 16, 17, all the way up to redline where it makes 20. when the only other difference was the m62 w/2.8" pulley, you punch the gas at pretty much any rpm and ~16ish psi was instant
Put a smaller pulley on your TVS and make BAM! 18psi and ramp up from there..
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Old Oct 13, 2009 | 05:38 PM
  #153  
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There seems to be some confusion on the TVS making less boost than the M62 down low. I think it's better worded that the TVS makes MORE boost up top, not less down low.

With a 2.8" pulley on the M62 and a 3.15" on the TVS, I believe the M62 is effectively a larger blower which would explain the surge. Not to mention, cars with top end power feel like they have less low end.
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Old Oct 13, 2009 | 05:44 PM
  #154  
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Originally Posted by Zooomer
There seems to be some confusion on the TVS making less boost than the M62 down low. I think it's better worded that the TVS makes MORE boost up top, not less down low.

With a 2.8" pulley on the M62 and a 3.15" on the TVS, I believe the M62 is effectively a larger blower which would explain the surge. Not to mention, cars with top end power feel like they have less low end.
You can see that pretty clearly in EB's graph:

Originally Posted by ebristol
Red - M62 w/ 2.7"
Blue/Green - TVS 2.9"

They seem to be on par until ~3200 rpm.
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Old Oct 13, 2009 | 06:30 PM
  #155  
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All things equal (pulley, etc).. the tvs would make more boost at every rpm.. k thx..
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Old Oct 13, 2009 | 07:50 PM
  #156  
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Originally Posted by Tennpenn83
he's talking about the instant grunt of the m62 vs the slower but more powerful increases from the tvs. the tvs packs way more punch, but its mostly upper rpms, where, with the m62, you punch the gas and BAM!
that makes complete sense, and that's true to what I've seen on MOST dyno's. But the dyno graph that EB posted, shows IDENTICAL hp and tq numbers down low between the TVS and M62, which would mean the car would feel the EXACT SAME, yet the TVS has quite a bit better top end, meaning the car would pull away faster and faster as you climb higher into the rpms.

My point is, John's statement is incorrect. The wheelspin should still be clearly evident as the dyno graph he posted shows the TVS and M62 making IDENTICAL power down low. This istant grunt that would normally not be felt on the TVS, is clearly shown that EB's car still feels exactly the same as his M62 did, only with better top end.

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Old Oct 13, 2009 | 09:00 PM
  #157  
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Originally Posted by ralliartist
that makes complete sense, and that's true to what I've seen on MOST dyno's. But the dyno graph that EB posted, shows IDENTICAL hp and tq numbers down low between the TVS and M62, which would mean the car would feel the EXACT SAME, yet the TVS has quite a bit better top end, meaning the car would pull away faster and faster as you climb higher into the rpms.

My point is, John's statement is incorrect. The wheelspin should still be clearly evident as the dyno graph he posted shows the TVS and M62 making IDENTICAL power down low. This istant grunt that would normally not be felt on the TVS, is clearly shown that EB's car still feels exactly the same as his M62 did, only with better top end.

how would you know? You never drove a tvs car. and we are not talking about curves, although if you look from 1000 to 2500 its clear even on Erics chart. Tennpenn is correct. and Zoomer. The car does not feel the same TVS to M62, just like these folks are saying (who have TVS) but in the end who cares, you dont have a TVS. meh why bother
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Old Oct 13, 2009 | 11:00 PM
  #158  
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It will be interesting to see what happens with a 2.7" pulley on the TVS.
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Old Oct 13, 2009 | 11:09 PM
  #159  
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Old Oct 13, 2009 | 11:43 PM
  #160  
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Originally Posted by SS/SC Crazer
****! I forgot I have your run files. Let me check it out...

Damit! Your runs did not log boost!

Last edited by ebristol; Oct 13, 2009 at 11:43 PM. Reason: Automerged Doublepost
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Old Oct 14, 2009 | 12:14 AM
  #161  
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Originally Posted by Zooomer
There seems to be some confusion on the TVS making less boost than the M62 down low. I think it's better worded that the TVS makes MORE boost up top, not less down low.

With a 2.8" pulley on the M62 and a 3.15" on the TVS, I believe the M62 is effectively a larger blower which would explain the surge. Not to mention, cars with top end power feel like they have less low end.
that's pretty much what i wanted to say.

Originally Posted by ralliartist
that makes complete sense, and that's true to what I've seen on MOST dyno's. But the dyno graph that EB posted, shows IDENTICAL hp and tq numbers down low between the TVS and M62, which would mean the car would feel the EXACT SAME, yet the TVS has quite a bit better top end, meaning the car would pull away faster and faster as you climb higher into the rpms.

My point is, John's statement is incorrect. The wheelspin should still be clearly evident as the dyno graph he posted shows the TVS and M62 making IDENTICAL power down low. This istant grunt that would normally not be felt on the TVS, is clearly shown that EB's car still feels exactly the same as his M62 did, only with better top end.

no offense ralli, but it's kinda hard to explain unless you've driven a tvs car. it's just a different feeling than the m62. there's much more to it, especially up top, as shown in EB's dyno sheet. but it doesn't just come on instant. i know the dyno sheet says one thing, but actually driving it feels different

Originally Posted by qwikredline
how would you know? You never drove a tvs car. and we are not talking about curves, although if you look from 1000 to 2500 its clear even on Erics chart. Tennpenn is correct. and Zoomer. The car does not feel the same TVS to M62, just like these folks are saying (who have TVS) but in the end who cares, you dont have a TVS. meh why bother
there is still plenty of low end grunt, and plenty of punch any time you nail the throttle, but it just doesn't feel the same as the m62. at all.

Last edited by Tennpenn83; Oct 14, 2009 at 12:57 AM.
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Old Oct 14, 2009 | 12:33 AM
  #162  
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Originally Posted by Zooomer
There seems to be some confusion on the TVS making less boost than the M62 down low. I think it's better worded that the TVS makes MORE boost up top, not less down low.

With a 2.8" pulley on the M62 and a 3.15" on the TVS, I believe the M62 is effectively a larger blower which would explain the surge. Not to mention, cars with top end power feel like they have less low end.
How did you come to that conclusion?
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Old Oct 14, 2009 | 01:51 AM
  #163  
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Originally Posted by ebristol
It will be interesting to see what happens with a 2.7" pulley on the TVS.
i can tell ya what will happen
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Old Oct 14, 2009 | 10:43 AM
  #164  
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Originally Posted by Area47
i can tell ya what will happen
please do
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Old Oct 14, 2009 | 01:27 PM
  #165  
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power goes up


i did 347 on a fucked up map. 353 on a good map.
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Old Oct 14, 2009 | 02:04 PM
  #166  
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Originally Posted by Area47
i can tell ya what will happen
I was thinking more about the Tq/hp differences or similarities in the low end.

I have sputs 2.7" E85 dyno runs but car made quite a bit lower tq then mine. His timing table is a lot different then mine.

I would think that with a smaller pulley the Tq/hp differences would become more obvious sooner in the RPMs.
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Old Oct 14, 2009 | 04:25 PM
  #167  
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Originally Posted by ebristol
I have sputs 2.7" E85 dyno runs but car made quite a bit lower tq then mine. His timing table is a lot different then mine.
Hmm.. no I'm on a 2.9" pulley. Maybe I'll try the 2.7 next year but haven't yet. I need to resolve my fuel issue first.
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Old Oct 14, 2009 | 05:12 PM
  #168  
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Originally Posted by lsjwannabe
How did you come to that conclusion?
From the dyno here posted showing the HP the same with a 2.7 M62 vs. a 2.9 TVS.
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Old Oct 14, 2009 | 07:11 PM
  #169  
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Originally Posted by ebristol
****! I forgot I have your run files. Let me check it out...

Damit! Your runs did not log boost!
no they did not, sorry!
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Old Oct 14, 2009 | 07:51 PM
  #170  
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i'm assuming this is in the lower rpms, where efficiency is not really of issue
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Old Oct 15, 2009 | 03:11 PM
  #171  
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Originally Posted by Tennpenn83
i'm assuming this is in the lower rpms, where efficiency is not really of issue
Efficiency is going to be nearly the same at lower boost/cfm levels between the M62 and TVS.
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Old Oct 15, 2009 | 03:18 PM
  #172  
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Old Oct 15, 2009 | 03:30 PM
  #173  
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Are the dotted green lines supercharger rpm?
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Old Oct 15, 2009 | 03:32 PM
  #174  
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That is correct.
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Old Oct 15, 2009 | 04:21 PM
  #175  
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dun dun dun!
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