supercharger setups - 5psi vs. 7psi, 9psi, 11psi+

[imyy4u]

guys -

being at only 5psi with the JR setup and blackbox, i'm starting to wonder if i have an advantage over the higher boosting guys in street racing and practical applications, even though i know those guys have at least a 40whp+ advantage over me. the reason i say this, is because i have a lot less wheel spin while still having quite a bit of whp. to illustrate what i'm saying, let's use an example of me vs. someone with 11psi in a 1/8 mile race from a dig with stock tires:

we both launch, and we both spin our wheels. i hook up first because i don't have quite as much power, and start down the track. meanwhile, joe blow with 11psi is spinning all the way through first, second, and the beginning of third gear, not really going anywhere. by the time he hooks up, and can actually put all of his whp to the ground and exercise his advantage, the race is almost over. in the mean time, i cross the finish line first and win. hmm...

point is, yes i know higher boost = more whp, but is that necessarily a practical advantage in a fwd torqueless rsx-s? i mean by the time these high boosting people get traction, i'm way out in front. yeah if it's a long race i'll lose, but in the short term i think i have the advantage. it's like i have a lot more whp than stock (by 50whp roughly...im at 225whp), but i haven't lost *that* much traction. so what i'm try to get at is from a dig, i think at least for the rsx-s there is a "perfect" balance of whp/boost, since too much means you are pretty much useless, and too little and you're going too slow. yeah from a roll, or at higher speeds those high boost cars > all, but from a dig, i think i would stand a good chance at beating a lot of those cars in a short race due to traction/torque issues.

thoughts/comments?

[rsxtypes7900]

in the 1/8th mile you might have more of an argument then the 1/4, just based on the 1/4 mile top ten list. Also, 5 psi on the street (from a roll) will probably get beat pretty badly by 11psi. I think your argument would be more realistic if you compared 7psi (jrsc or 6-8psi ctsc) to 11+ psi. But just based on the 1/4 mile times list your argument is not that well thought out (with people running 12.0-12.5) with slicks and some nos while you are in the low 13's according to your sig. I know Jim has Cams but your argument is that more power is bad for our cars (which i agree to a point).

cliff notes: good thought but according to 1/4 mile times incorrect

[Darqnez]

That would apply to those who havent figured out how to launch correctly with their cars, someone who has figured out how to launch and keep traction will still win. Its all about the driver. Thats the same reason why you do have a good chance to beat alot of guys who have not figured out how to launch correctly.

[imyy4u]

Originally Posted by rsxtypes7900

in the 1/8th mile you might have more of an argument then the 1/4, just based on the 1/4 mile top ten list. Also, 5 psi on the street (from a roll) will probably get beat pretty badly by 11psi. I think your argument would be more realistic if you compared 7psi (jrsc or 6-8psi ctsc) to 11+ psi. But just based on the 1/4 mile times list your argument is not that well thought out (with people running 12.0-12.5) with slicks and some nos while you are in the low 13's according to your sig. I know Jim has Cams but your argument is that more power is bad for our cars (which i agree to a point).

cliff notes: good thought but according to 1/4 mile times incorrect

hmm...i wonder when i upgrade to 7psi if i could beat say for example wdsonny with 11psi+ in the 1/8. yes i know in the 1/4 that's enough time for them to put their power down but i guess i was talking more about the 1/8 mile...it'd be interesting to see 1/8 mile times and how that list changes when you do 1/4 mile runs...

[rsxtypes7900]

I was having a similar conversation with my cousin who drives a WRX. Stock for Stock our cars (accoring to Car and Driver) run very close in the 1/4 mile. There werent any 1/8 mile stats but I would assume he would get me by .4-.5 in the 1/8th and only like .1-.2 in the 1/4

[rsxtypes7900]

also, i thnk black nite had a thread about this between 9 and 11 psi a few days ago, a quick search might do you some good

[K20A2_S]

I'll spin past you

You ran 13.6 @ 102 with slicks.

I ran a 12.8@110 with a 1.99 60' time on stock drivetrain.

The 100 bucks to upgrad the pulley and couple hundred for the injectors are the best bang fo yo buck for the supercharger when it comes to the WHP to $$ ratio.

[DC5_Angelo]

start in 2nd gear

[rsxtypes7900]

Originally Posted by K20A2_S

I'll spin past you

You ran 13.6 @ 102 with slicks.

I ran a 12.8@110 with a 1.99 60' time on stock drivetrain.

The 100 bucks to upgrad the pulley and couple hundred for the injectors are the best bang fo yo buck for the supercharger when it comes to the WHP to $$ ratio.

were u also on slicks or no?

[jaydmrsx03]

on drag radials, i'd fuck up a 5psi supercharged rsx in the 1/8th or 1/4 mile

[jsfwds2k]

Originally Posted by imyy4u

hmm...i wonder when i upgrade to 7psi if i could beat say for example wdsonny with 11psi+ in the 1/8. yes i know in the 1/4 that's enough time for them to put their power down but i guess i was talking more about the 1/8 mile...it'd be interesting to see 1/8 mile times and how that list changes when you do 1/4 mile runs...

Well I didn't have street tires I had azenis, but I ran a 8.7 in the 1/8th with 9 psi. I doubt you went faster than that. If you did, then good driving!

Jamie

[BlackNite]

Originally Posted by imyy4u

guys -

being at only 5psi with the JR setup and blackbox, i'm starting to wonder if i have an advantage over the higher boosting guys in street racing and practical applications, even though i know those guys have at least a 40whp+ advantage over me. the reason i say this, is because i have a lot less wheel spin while still having quite a bit of whp. to illustrate what i'm saying, let's use an example of me vs. someone with 11psi in a 1/8 mile race from a dig with stock tires:

we both launch, and we both spin our wheels. i hook up first because i don't have quite as much power, and start down the track. meanwhile, joe blow with 11psi is spinning all the way through first, second, and the beginning of third gear, not really going anywhere. by the time he hooks up, and can actually put all of his whp to the ground and exercise his advantage, the race is almost over. in the mean time, i cross the finish line first and win. hmm...

point is, yes i know higher boost = more whp, but is that necessarily a practical advantage in a fwd torqueless rsx-s? i mean by the time these high boosting people get traction, i'm way out in front. yeah if it's a long race i'll lose, but in the short term i think i have the advantage. it's like i have a lot more whp than stock (by 50whp roughly...im at 225whp), but i haven't lost *that* much traction. so what i'm try to get at is from a dig, i think at least for the rsx-s there is a "perfect" balance of whp/boost, since too much means you are pretty much useless, and too little and you're going too slow. yeah from a roll, or at higher speeds those high boost cars > all, but from a dig, i think i would stand a good chance at beating a lot of those cars in a short race due to traction/torque issues.

thoughts/comments?

It don't matter man... in no way is 5psi better than 7/9/11psi. Well, maybe that it puts less "stress" on the engine, but that's about it. From a dig, BOTH cars would have traction issues. Getting off the line is one thing, but as soon as you start rolling you will get owned. While you got traction and think you're pulling away, the 9psi RSX will be spinning and "keeping up". As soon as they grab (well before 1/8 mile), you will be passed like you're not moving. And i'm speaking from experiance.

[SOLORSX]

Originally Posted by imyy4u

guys -

being at only 5psi with the JR setup and blackbox, i'm starting to wonder if i have an advantage over the higher boosting guys in street racing and practical applications, even though i know those guys have at least a 40whp+ advantage over me. the reason i say this, is because i have a lot less wheel spin while still having quite a bit of whp. to illustrate what i'm saying, let's use an example of me vs. someone with 11psi in a 1/8 mile race from a dig with stock tires:

we both launch, and we both spin our wheels. i hook up first because i don't have quite as much power, and start down the track. meanwhile, joe blow with 11psi is spinning all the way through first, second, and the beginning of third gear, not really going anywhere. by the time he hooks up, and can actually put all of his whp to the ground and exercise his advantage, the race is almost over. in the mean time, i cross the finish line first and win. hmm...

point is, yes i know higher boost = more whp, but is that necessarily a practical advantage in a fwd torqueless rsx-s? i mean by the time these high boosting people get traction, i'm way out in front. yeah if it's a long race i'll lose, but in the short term i think i have the advantage. it's like i have a lot more whp than stock (by 50whp roughly...im at 225whp), but i haven't lost *that* much traction. so what i'm try to get at is from a dig, i think at least for the rsx-s there is a "perfect" balance of whp/boost, since too much means you are pretty much useless, and too little and you're going too slow. yeah from a roll, or at higher speeds those high boost cars > all, but from a dig, i think i would stand a good chance at beating a lot of those cars in a short race due to traction/torque issues.

thoughts/comments?

i think you should buy my 550cc injectors and get that 7lb pulley.

[Druz-S]

yeah, I think even in 1/8 mile times...7psi will beat the 5psi. Unless the driver of the higher boosted car just sucks at launching

[blacksage]

The man had a good thought though. I think the answer is even the 1/8th mile is not short enough.

[rsxtypes7900]

Originally Posted by blacksage

The man had a good thought though. I think the answer is even the 1/8th mile is not short enough.

he had a very nice thought. In some instances im sure his theory might hold true like in a short windy autox course where traction is more important then power (im not saying yes im sayaing it could be hypothetically) so + rep

[wdsonny]

On street tires, with a perfect launch and 2.2 60'. You wouldn't beat me with 5psi. You may have more traction, but who's to say I don't know how to launch at 11psi. Better bring your 'A' Game.

Originally Posted by imyy4u

hmm...i wonder when i upgrade to 7psi if i could beat say for example wdsonny with 11psi+ in the 1/8. yes i know in the 1/4 that's enough time for them to put their power down but i guess i was talking more about the 1/8 mile...it'd be interesting to see 1/8 mile times and how that list changes when you do 1/4 mile runs...

[imyy4u]

Originally Posted by ArticDC5

i think you should buy my 550cc injectors and get that 7lb pulley.

I have 550cc injectors. I have the 7lb pulley. All I'm missing is K-pro/hondata and then I'm going race setup. Too bad k-pro is so damn expensive!!

-john

[imyy4u]

Originally Posted by wdsonny

On street tires, with a perfect launch and 2.2 60'. You wouldn't beat me with 5psi. You may have more traction, but who's to say I don't know how to launch at 11psi. Better bring your 'A' Game.

Okay how about I'll race you 30 feet then :-) lol, j/k that would obviously be pointless.

[wdsonny]

^^On foot, sure. Let me get my track shoes on. How about we go for time/distance on foot. I am old and slow, just like my car.

[conradb212]

Originally Posted by imyy4u

guys - being at only 5psi with the JR setup and blackbox, i'm starting to wonder if i have an advantage over the higher boosting guys in street racing and practical applications, even though i know those guys have at least a 40whp+ advantage over me. the reason i say this, is because i have a lot less wheel spin while still having quite a bit of whp. to illustrate what i'm saying, let's use an example of me vs. someone with 11psi in a 1/8 mile race from a dig with stock tires: thoughts/comments?

You actually may have a point there. After about 220 whp, it's all about traction. My times with 8.5 psi are, so far, no better than I had with 6 psi. In fact, my car actually feels better at the lower boost. And no, it's not because I don't know how to launch my car.

Now, say, how can you so knowledgeably speculate about this and then ask something rather marginal like "can I use Hondata 4 on my JRSC" at the same time?

[BlackNite]

Originally Posted by conradb212

You actually may have a point there. After about 220 whp, it's all about traction. My times with 8.5 psi are, so far, no better than I had with 6 psi. In fact, my car actually feels better at the lower boost. And no, it's not because I don't know how to launch my car.

Now, say, how can you so knowledgeably speculate about this and then ask something rather marginal like "can I use Hondata 4 on my JRSC" at the same time?

I dropped .3 sec in the 1/4 mile going from 9psi to gasp... 9psi lol. It's with the 11psi pulley though, so the powerband is better for midrange. update the 1/4 mile time post when you can

[Drk]

What pulley are the 550's good till? 9lbs? 11? Or are they going to get maxed out well before then.

[krystar]

at least 9. don't know about 11 though.

[jaydmrsx03]

i ran 650's at 9psi...........for like a week, it was fast lol