Is a return line needed?

[barrr]

I have a return line & 750cc injectors sitting in my basement.

With the MS, is the return line needed or would it be easier to just run the 750 injectors on the stock line/pressure?

I'm running a GT3071R with all the typical bolt-ons.

Thanks,
Richard

[boost junkie]

I would try it without the return line first. The only SNAFU is the MS fires two injectors at once (aka batch fire) so running real big injectors will high fuel pressure starts to become an issue. However, I'm running 750cc injectors at 45psi. I think they could run at 58psi without a problem.

[2001dodgeneonrt]

I ran 55 base last year on 750cc with 21psi and it idled fine on normal code. Got 1000cc injectors this year and running high res. Plan on running about the same psi.

[guhfluh]

Kevin's car was just tuned on 750's and no return line. It will work, but A 1:1 is recommended to make it easier...

[vschaos]

Quote: Originally Posted by guhfluh

Kevin's car was just tuned on 750's and no return line. It will work, but A 1:1 is recommended to make it easier...

Just as he said I just had the tune finished on mine with 750's and no return line. Running just a tad over 22psi, 11.8-12.0 a/f with no knock at all....all the way to 7k. Soon though boost will be turned up and my water/meth turned on