Switching from ls6 to Vic Jr. with Fast 4150
04-03-2011, 06:44 PM
#1
Switching from ls6 to Vic Jr. with Fast 4150 Ended up trading some of my parts for a Vic Jr. Intake with a fast 4150 tb. I am running maf tune with a ported ls6 with ported stock ported tb right now. I am wondering if I would be better off keeping the maf tune or going to a SD tune. I am not very good at tuning with my hpt. I would like to go SD anyone have first hand experience with SD tune over Maf tune with this setup? Also am I going to see some good gains over what I have. Looking for some advice. Here is a picture of the new setup.
04-03-2011, 07:28 PM
#2
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I'm running in SD right now, but I'm going to install my 100mm maf and give it a try here in the near future. PS... Get ready to do some cutting !!!
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04-03-2011, 07:42 PM
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Haven't tried it with the hat off. I'm shooting a 150 dry shot in the filter, and have a 4150 big shot under the TB... I have HP Tuners, and trying to do it myself.
04-03-2011, 08:00 PM
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When you run SD, you are using all the secondary tables. Especially on the 98's, they are very low resolution. ( ve tables ) I had an LS2 intake w/ a FAST 90mm. I use to run 10.80 - 11.0 with the 150 dry shot, and now I just hit 10.6 running out of fuel... Just upgraded to the twin intake walbro's, and that took my fuel pressure up to 70lb... It's like starting over again...
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04-04-2011, 08:49 PM
#11
Right now my car has a NX stage 3 camshaft in it. Will that work ok with this intake setup or should I get a different cam. Here are the specs.
SEAT 292-298 @50 235-239 LOBE LIFT .353-.341 VALVE LIFT .600-.580. 112
SEAT 292-298 @50 235-239 LOBE LIFT .353-.341 VALVE LIFT .600-.580. 112
Last edited by FASTFB; 04-05-2011 at 10:28 AM.
04-05-2011, 06:34 AM
#12
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It will work. The main thing that will be changed is the VE Tables. Under air flow. I manually adjusted them for idle & throttle response, before I data logged. The cam I'm running was made for a big cube stroker... LOL !!! If I can make it work, you won't have any trouble !
