ok i give

what is HSR and why does it seem like it is something that requires a billion modifications


is this a third gen f body thing only ?

or ?

what is the big deal about it ?

i see so many threads with something about HSR in them but i have no clue what it is

i assume its some kind of fuel injection or something

i am a carb and TBI guyand somewhat MPFI

but anything other than that i have no idea

wanted to learn something here i guess

heh

 

this is the HSR,




HSR stands for Holley Stealth Ram

 

Stealth Ram

 

Billion modifications? Adapt the fuel rails, install the HSR, tune. Sometimes you need to change the distributor, but on 86 and earlier. No big deal.

 

hum interesting, so its TPI or MPFI

now i know what this HSR thing is all about i guess


thats cool

 

It just replaces the tpi intake base/runner/plenum. It uses all the same sensors (except egr) and raises the rpm range some as tpi cuts off at 4000-4500.

 

It IS a MPFI system.

It is NOT TPI ("Tuned Port Injection"), which is a specific system produced by GM, which attempts to produce acoustic reinforcement of cylinder fill events over a narrow range of RPMs, with as little effect as possible on RPMs lower than that range and at the total sacrifice of cyl fill above that RPM range, by using "tuned" (like a wind musical instrument) runners.