I want more midrange boost, how?
Thread Starter
TECH Enthusiast
Joined: Dec 2002
Posts: 698
Likes: 0
From: Fort Worth
I want more midrange boost, how? I was racing my buddy's truck the other day and found that from 0-85mph he is right beside me. I know most of this is due to tire slip but, when my tires finally catch there is a couple of seconds of lag. It seems my old nitrous kit has no lag. Now that said from 85 to 140 my truck is like a rocket and it is like he hits the brakes.
When I shift my boost drops to 3lb. I was thinking a bigger pulley and just shift sooner. Has anyone tried this? Maybe a 10 or 12lb. and just shift at 5,800 or something. Maybe just raise my shift points so I don't lose so much rpm. I would like some opinions please. I really don't want to start filling a bottle again.
<small>[ April 23, 2003, 08:27 PM: Message edited by: StupidFast ]</small>
When I shift my boost drops to 3lb. I was thinking a bigger pulley and just shift sooner. Has anyone tried this? Maybe a 10 or 12lb. and just shift at 5,800 or something. Maybe just raise my shift points so I don't lose so much rpm. I would like some opinions please. I really don't want to start filling a bottle again.
<small>[ April 23, 2003, 08:27 PM: Message edited by: StupidFast ]</small>
TECH Fanatic
Joined: Mar 2002
Posts: 1,452
Likes: 0
From: toronto
Re: I want more midrange boost, how? what Pulley do you have with the kit ?
your running a D1-sc right ?
What I'm doing is going to the 3.6" pulley and dropping my rev limiter and shift point a little so i don't see too much boost up high
thinking about 10psi at most with the stock 5.3
how many Psi are you seein now ?
jim
your running a D1-sc right ?
What I'm doing is going to the 3.6" pulley and dropping my rev limiter and shift point a little so i don't see too much boost up high
thinking about 10psi at most with the stock 5.3
how many Psi are you seein now ?
jim
Thread Starter
TECH Enthusiast
Joined: Dec 2002
Posts: 698
Likes: 0
From: Fort Worth
Re: I want more midrange boost, how? I have a D-1SC and a 4.5 pulley. The most I have seen is 9lbs. at 6,100. I usually see 8lbs. at 6,000, which is what I shift at.
I might try just shifting higher first. Have you tired this? What is your boost at when you shift?
I think I read something that said the D-1SC moves the powerband up more then a P-1SC at the same boost.
My 6.0 has just a little less compression than my old 5.3, so I should have no problems at 10lbs.
So I guess you have this same problem? Thanks for the input.
I might try just shifting higher first. Have you tired this? What is your boost at when you shift?
I think I read something that said the D-1SC moves the powerband up more then a P-1SC at the same boost.
My 6.0 has just a little less compression than my old 5.3, so I should have no problems at 10lbs.
So I guess you have this same problem? Thanks for the input.
TECH Regular
Joined: Nov 2001
Posts: 409
Likes: 0
Re: I want more midrange boost, how? </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by StupidFast:
<strong> I really don't want to start filling a bottle again. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Have you thought about a whipple type blower, or a turbo? I know that's a big change, but the midrange and lower rpm boost will be there.
<small>[ April 24, 2003, 02:16 AM: Message edited by: Rpm2800 ]</small>
<strong> I really don't want to start filling a bottle again. </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Have you thought about a whipple type blower, or a turbo? I know that's a big change, but the midrange and lower rpm boost will be there.
<small>[ April 24, 2003, 02:16 AM: Message edited by: Rpm2800 ]</small>
Thread Starter
TECH Enthusiast
Joined: Dec 2002
Posts: 698
Likes: 0
From: Fort Worth
Re: I want more midrange boost, how? I would love a turbo but, I am not going to buy one. I also will not buy a whipple. I have done alot of research befor buying my supercharger and I am happy with it.
Now, I am a firmly believe that there is always room for improvement. This is the first FI motor I have owned and I am just starting to play with it.
Now, I am a firmly believe that there is always room for improvement. This is the first FI motor I have owned and I am just starting to play with it.
