I know this IS a Stupid Question BUT

jmonda · 10-02-2007, 10:47 AM

Ok I am definitely not familiar with a supercharged engine. I have a 98 4.6 with the vortech supercharger 5 speed manual tranny. Here is the dumb question part. At how many rpms should I be shifting. If I am racing should I take it up to 5500 or more? If I am just driving around should I shift at like 3 grand?

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nanaki · 10-02-2007, 10:54 AM

i wouldn't go above 6 grand. your car probably levels out around 5500-5700 and stops making power or may even start to lose it. best to shift around there. my car fell on it's face at 5700rpm with the S trim i had on there.

jmonda · 10-02-2007, 11:41 AM

Quote:

ORIGINAL: nanaki

i wouldn't go above 6 grand.Â* your car probably levels out around 5500-5700 and stops making power or may even start to lose it.Â* best to shift around there.Â* my car fell on it's face at 5700rpm with the S trim i had on there.

Wow ok I have been taken it to 5500 pretty regular I guess I better rethink that.

tripsevn7 · 10-02-2007, 11:48 AM

as long as your not over revving the car, i.e. what nanaki said about running up over 5700 your fine. the harder you run her on a consistent basis equals how long she will last. if your putting your foot thru it at every light and what not, be prepaired to start wearing parts out. also you may want to add your mods and vehicle description to your sig, that way you will not have to type it out every time you post.

jmonda · 10-02-2007, 12:01 PM

Quote:

ORIGINAL: tripsevn7

as long as your not over revving the car,Â* i.e. what nanaki said about running up over 5700 your fine.Â* the harder you run her on a consistent basis equals how long she will last.Â* if your putting your foot thru it at every light and what not,Â* be prepaired to start wearing parts out.Â* also you may want to add your mods and vehicle description to your sig,Â* that way you will not have to type it out every time you post.Â*

Yeah duh thanks for the advice I guess I should add them.

only90s · 10-02-2007, 12:03 PM

Hey jmonda did you ever put that car on the dyno?

jmonda · 10-02-2007, 12:16 PM

Quote:

ORIGINAL: only90s

Hey jmonda did you ever put that car on the dyno?

Yeah I sure did. I had it Dyno tuned is actually 297 rwhp air to fuel 11.3. I would like to get more horse the mechanic tells me to up the psi. Not sure what to do.

only90s · 10-02-2007, 12:18 PM

Quote:

ORIGINAL: jmonda

Quote:

ORIGINAL: only90s

Hey jmonda did you ever put that car on the dyno?

Yeah I sure did. I had it Dyno tuned is actually 297 rwhp air to fuel 11.3. I would like to get more horse the mechanic tells me to up the psi. Not sure what to do.

How many pounds of boost is it putting out?

jmonda · 10-02-2007, 12:29 PM

Quote:

ORIGINAL: only90s

Quote:

ORIGINAL: jmonda

Quote:

ORIGINAL: only90s

Hey jmonda did you ever put that car on the dyno?

Yeah I sure did. I had it Dyno tuned is actually 297 rwhp air to fuel 11.3. I would like to get more horse the mechanic tells me to up the psi. Not sure what to do.

How many pounds of boost is it putting out?

The guy said it was at 9psi He said the easiest way and cheapest to ad some HP would be go more. I asked him about doing a pi intake swap and he did not think it would do any good. I looked at intercoolers but man they are way up their as far as price. Was thinking about doing a TB and Plenum. Not sure

tripsevn7 · 10-02-2007, 12:43 PM

you may want to look into meth injection as well. snow makes a good kit which will free up a couple ponies. the tb and plenum arent bad ideas, but i would look into opening up the exhaust as well.