nitrous with pmrs?

[RJM06590]

So i pulled my sight plug and saw the pmrs idk who had the de de dee idea to put em in but it is what it is. So a new bottom end isn in the budget for a bit. I know with really good tuning i can run 190s for the injectors but i haven heard how nos affects them anyone know? Also how much boost do ya think i should keep it to?

[blowinsmoke7.3]

Good question. I don't have PMR'S but interesting thread

[RJM06590]

yeah iv talked to a lotta guys who did the basic mods and light injectors and had no probs but what about stage twos with a small shot to clear em up?

[shu873]

The general consensus is a 400'ish HP limit on PMR's for a 7.3L. Personally I wouldn't use n2o in your situation. 400 fuel only hp and 400 n2o assisted HP are two different things.

[RJM06590]

Yeah they are i agree. Im thinkin i can get more if i get it live tuned. The whole problem is cylinder pressure gettin too high due to overadvanced timing. Soo if i run 190s or 230s tuned down and have it live tuned to keep the pressures low it should help. Also when you use nitrous you back the timing down??

[shu873]

Originally Posted by RJM06590

Yeah they are i agree. Im thinkin i can get more if i get it live tuned. The whole problem is cylinder pressure gettin too high due to overadvanced timing. Soo if i run 190s or 230s tuned down and have it live tuned to keep the pressures low it should help. Also when you use nitrous you back the timing down??

I'm not a tuning expert by any means, but I know a lot of people have nitrous tunes made that retard the timing to help manage CP's.

[RJM06590]

yeah soo less pressure on the rods? not sure maybe a uner will say somethin