1qckdodge

Im thinking of letting my 6s go for a set of Mach 4s and was wondering if I will notice a big decrease in power? or will the less fuel help in spool up? my SPS62 lights ok but its a tad bit smokey and I cant help but wonder if a smaller stick will help out, when I ran the 6s with my old PS62 I got 511hp with hardly any smoke on the street, but egts were on the hot side, now I have great cooling but im not to fond of the smoke, also my old combo of stg 5 Jammers and the PS62 with a TST Comp netted 496/989.

Box5

i don't think less fuel will help spoolup. U'll loose power, it's up to u, lol.

1qckdodge

Thanks, im just trying to get a handle on how to balance my whole combo, I want to have as much clean power as possible, well within my budget anyways.

Ph4tty

I think the 4's would work nicely with the sps62. I run 4's with a ps64 which is just a bit slower than yours and the only time I see any smoke is when I'm really laying into it or lugging along <1400 rpms. I think the 4's would produce more power than your old jammer 5's.

I'll pm my other thoughts

RowJ

I recently went from 4's to 6's and see no gain in spoolup (4's were fast)..... so I would not expect you to loose any.
I believe HP ratings on Mach injectors are accurate, so you'll loose 60-70 hp... but the 4's do clean up quicker and your EGT's will be less. The 6's pull noticably harder above 70-80 mph.... as you might expect.

Jammer 5's I've seen on the dyno appear to be in the 130 hp range...with more smoke.

RJ

Mike D

Has it been hot and humid where you live? My 4.5 are great during the cooler months for low smoke, but once the hot/humid weather gets here, not so good.

What are you stacking with your TST?

blackdiesel

you will lose some egt's and not as much horsepower as you think...