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-   -   50 More HP at Night! (https://www.rx7club.com/3rd-generation-specific-1993-2002-16/50-more-hp-night-82313/)

R1Outcast 05-23-02 09:03 PM

50 More HP at Night!
 
I don't know if it's just mine or if all FD's drive like they have like 50 more horsepower at night. I know the cooler air at night makes for slightly better performance for any car. But the FD seems to really love night time driving. Has anyone else noticed this?

mightyslash 05-23-02 09:05 PM

Yeah, I feel 40-50 more HP at night.

R1Outcast 05-23-02 09:08 PM

mightyslash : how do manage to respond to every post?:confused:

mightyslash 05-23-02 09:11 PM

Fast connection.

black99 05-23-02 09:12 PM

I don't know about 40-50hp but yeah they seem to run better at night on cooler air..

P'cola FD 05-23-02 09:34 PM

The cool air makes our crappy intercoolers less crappy.

NickSimcheck 05-23-02 09:55 PM


Originally posted by mightyslash
Fast connection.
= A lot of time on his hands. :p:

ZoomZoomRX7 05-23-02 09:58 PM

isn't it funny? i get more noticeable HP at night;)

nocab72 05-24-02 12:24 AM

I don't remember what the ratio is, but there is a hp gain associated with every drop in degree for forced induction cars. Due to the air being more compressed/compressable at lower temps.

*shameless plug* Maybe someone outta drop that question over on my new forced induction only forum. http://www.forcefed.cc */shameless plug*

K

jkprelude 05-24-02 01:04 AM

All cars run better at night. Colder air is better air for most cars. And I don't mean like -30 degrees below 0. If you feel 50 more horse power when the sun goes down, it just means the crack has done its job.. : )

LUV94RX7 05-24-02 01:18 AM

I think the rule of thumb is for every 10 degrees cooler the air intake into your engine is worth 1-2% power improvement.

300hp motor at 30 degrees cooler intake to engine is worth 9-18 hp.

Ken

KINETIK_FD3S 05-24-02 04:46 AM

on a full moon my moms volvo gets a 200hp difference!

Dont_Be_A_Rikki 05-24-02 06:08 AM


Originally posted by jkprelude
All cars run better at night. Colder air is better air for most cars. And I don't mean like -30 degrees below 0. If you feel 50 more horse power when the sun goes down, it just means the crack has done its job.. : )
LOL LOL :rofl: :rofl:

well it has to do with running lean aswell. cooler are means more air so then in our case leaner condition becareful not to pop a motor when it gets super cold....

Nico 05-24-02 08:04 AM

I read the other day that Subaru WRC teams Report a gain of 1Hp per 1 Degree lowering of the intake temp - Now i know they are crappy subaru's and im not sure What the relationship between exterior Temp and Intake temp would be on the 7 but i thought you might find it a interesting fact anyway...

No ?

I'll get me coat.....

forcefed1 05-24-02 08:06 AM

also I notice on many cars cooler air = a bit more boost.

I think a good intercooler makes the difference even more noticeable.

KZ1 05-24-02 08:31 AM


Originally posted by Dont_Be_A_Rikki

LOL LOL :rofl: :rofl:

well it has to do with running lean aswell. cooler are means more air so then in our case leaner condition becareful not to pop a motor when it gets super cold....

nah, our cars have air temperature sensors that compensate for all types of conidtions. No probelm there. Only thing you do have to watch out for, is if you haev your car modded, cold air can make it boost more, bigger spikes, creep, etc.

I have to adjust my boost settings as weather changes, not fuel ratios though. However, by getting boost you are not set for, ie with stock ECU, you cn run lean, maybe that is was Rikki meant.

Dont_Be_A_Rikki 05-24-02 08:55 AM

yup kz1 you got it I just fiqured everyone knew what I meant Sorry

MrZUMZUM 05-24-02 09:03 AM

your rims
 
R1 Outcast:

I was wondering about the rims in your pics.....did you just powdercoat the centers of the stock rims black or what?......they look pretty good......

I want SSR comps but this may hold me until I get em........

tks,

dp

pp13bnos 05-24-02 09:06 AM

When i had my n/a 2nd gen on the dyno, (Excessive motor sports) without a fan blowing on the intake the tempature was over 120degrees, with the fan, it was lowerd to a ambient 60 degrees. We picked up about 10rwhp. I know its not a turbo car, but thats my experience. CJ

R1Outcast 05-24-02 04:50 PM


Originally posted by jkprelude
All cars run better at night. Colder air is better air for most cars. And I don't mean like -30 degrees below 0. If you feel 50 more horse power when the sun goes down, it just means the crack has done its job.. : )
:crazy:

R1Outcast 05-24-02 04:55 PM

Re: your rims
 

Originally posted by MrZUMZUM
R1 Outcast:

I was wondering about the rims in your pics.....did you just powdercoat the centers of the stock rims black or what?......they look pretty good......

I want SSR comps but this may hold me until I get em........

tks,

dp

They're some old OZ rims. They're two piece wheels, so I left the lip silver and painted the middle section black.

SanJoRX7 05-24-02 06:24 PM


Originally posted by R1Outcast
mightyslash : how do manage to respond to every post?:confused:
The P in the PIII in mightyslash's computer stands for Postwhore, and like sampsons hair, it's where he draws his power from.


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