Does This Car Haul Ass in Cold Weather or WHAT?
12-01-08, 10:59 PM
#1
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Does This Car Haul *** in Cold Weather or WHAT?
did I mention I love this car? I came up on a newer 3 series Beemer tonight, he had it floored at an on ramp and I blew his doors off like he was absolutely standing still, this car RIPS in this cold weather, I'm seeing 4 C charge temps!
I need to get to a dyno, I must have at least 370 at the wheels
I need to get to a dyno, I must have at least 370 at the wheels
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12-02-08, 01:00 AM
#8
i was gonna mention that same thing twisted. be careful man i have some horror stories about cold air and pushing it. way back when i was on the stock twins and cold winter nights, the stock twins really seem to scream in the cold air or at least i thought. man i miss that smooth spooling sound.
12-02-08, 12:07 PM
#11
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Does anybody else have trouble keeping traction in cold weather? Not sure if it's the cool charge or the cold tires, but it's hard to keep in a straight line under full throttle when the temps dip (for LA, at least).
2007 ZX-10: Where are you measuring your charge temps?
2007 ZX-10: Where are you measuring your charge temps?
12-02-08, 12:26 PM
#13
ha, i agree 100% with this thread. I had the car out all last week while i was home in chicago for thanksgiving and DEF on saturday night it was into the 20s. Man that was the fastest the car has felt in a lonnng time. Absolutely no traction in 1st.....2nd was iffy
BUT!........man I was lucky enough to know what the hell i'm doing with the car because I probably would have blown the motor. I have a manual boost controller and normally I'm ok with higher gear boost in 2ndary. But in the cold weather I was EASILY gonna hit 13-14psi if i didn't let out. That only happen thankfully for a split second because I was staring at the boost gauge. That meant my night was really only just some fun 2nd gear pulls. I basically had to open the controller completely up in order to not really overboost...but i didn't want to chance anything so I resisted anymore highway pulls. Now the car is in hibernation for the season.
for reference my mods are: street port,stock twins, stock ecu, hf cat, dp, rb duals catback, upgraded SMIC, manual boost set to 10 or lower
I realize i'm really pushing the limit but the car has been running strong for the last 5years and I ALWAYS have the controller to 10 psi...most of the time its like 8-9 psi
Most likely i'm gunna port the wastegate when I'm home for winter break. I'm waiting to graduate and get a nice job to pay for a PFC and some tuning. But yea, cold weather at least has some ups
BUT!........man I was lucky enough to know what the hell i'm doing with the car because I probably would have blown the motor. I have a manual boost controller and normally I'm ok with higher gear boost in 2ndary. But in the cold weather I was EASILY gonna hit 13-14psi if i didn't let out. That only happen thankfully for a split second because I was staring at the boost gauge. That meant my night was really only just some fun 2nd gear pulls. I basically had to open the controller completely up in order to not really overboost...but i didn't want to chance anything so I resisted anymore highway pulls. Now the car is in hibernation for the season.
for reference my mods are: street port,stock twins, stock ecu, hf cat, dp, rb duals catback, upgraded SMIC, manual boost set to 10 or lower
I realize i'm really pushing the limit but the car has been running strong for the last 5years and I ALWAYS have the controller to 10 psi...most of the time its like 8-9 psi
Most likely i'm gunna port the wastegate when I'm home for winter break. I'm waiting to graduate and get a nice job to pay for a PFC and some tuning. But yea, cold weather at least has some ups
12-02-08, 04:16 PM
#15
This time of year you see two different posts. 1) I spun out and hit something (cold pavement/traction related) and 2) I over-boosted and blew my motor (Nice dense cold air). Watch out people, the best thing to do is park that beautiful car before something unfortunate happens...
12-02-08, 09:10 PM
#18
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^ ummm, what?
The only reason why it can't compensate for the density of the air is because its a MAF system as opposed to a MAP based system like a Supra which can compensate for exhaust, intake etc mods and with an Rx7 you have a 3 mod rule before you have to upgrade your ecu.
On another note, I did drive my Rx7 at the beginning of winter, but not hard because I was always having to watch the coolant. For some reason it drinks coolant in cold temps, but not in summer. All that meant though for me is that I couldnt get carried away with the colder temps, maybe a Mazda installed safety option? hahahaha
The only reason why it can't compensate for the density of the air is because its a MAF system as opposed to a MAP based system like a Supra which can compensate for exhaust, intake etc mods and with an Rx7 you have a 3 mod rule before you have to upgrade your ecu.
On another note, I did drive my Rx7 at the beginning of winter, but not hard because I was always having to watch the coolant. For some reason it drinks coolant in cold temps, but not in summer. All that meant though for me is that I couldnt get carried away with the colder temps, maybe a Mazda installed safety option? hahahaha
12-02-08, 09:21 PM
#19
^ ummm, what?
The only reason why it can't compensate for the density of the air is because its a MAF system as opposed to a MAP based system like a Supra which can compensate for exhaust, intake etc mods and with an Rx7 you have a 3 mod rule before you have to upgrade your ecu.
On another note, I did drive my Rx7 at the beginning of winter, but not hard because I was always having to watch the coolant. For some reason it drinks coolant in cold temps, but not in summer. All that meant though for me is that I couldnt get carried away with the colder temps, maybe a Mazda installed safety option? hahahaha
The only reason why it can't compensate for the density of the air is because its a MAF system as opposed to a MAP based system like a Supra which can compensate for exhaust, intake etc mods and with an Rx7 you have a 3 mod rule before you have to upgrade your ecu.
On another note, I did drive my Rx7 at the beginning of winter, but not hard because I was always having to watch the coolant. For some reason it drinks coolant in cold temps, but not in summer. All that meant though for me is that I couldnt get carried away with the colder temps, maybe a Mazda installed safety option? hahahaha
12-02-08, 09:34 PM
#21
Hell yeah, cold weather makes for tons o' fun 
I tuned my car last winter when it was max cold where I live, and the car feels like it's making another 20+ hp when it's chilly out. But 4C charge temp? That's pretty friggen cold. Coldest I've ever had mine was 25C on a 40F day 
Have fun and don't crash that pretty car!!!!
I tuned my car last winter when it was max cold where I live, and the car feels like it's making another 20+ hp when it's chilly out. But 4C charge temp? That's pretty friggen cold. Coldest I've ever had mine was 25C on a 40F day Have fun and don't crash that pretty car!!!!
12-02-08, 10:12 PM
#24
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oh sorry, my bad guys, I was just refering to a thread on here about possibly converting it to a MAP system, I just assumed that these cars were completely MAF based. About the wastegate, your right about that too, so just completely forget what I said.
12-02-08, 10:23 PM
#25
I totally agree with this. I had an AEM UEGO hooked up w/ the mods that I have now (minus the FMIC, it was a SMIC), the car at WOT was in the 10's. I forgot where exactly but I posted in a thread long ago that that 3 mod stuff w/ our cars running out of fuel is crap. Just gotta control that boost!! I think I'll port my waste gate this month, even though I'm not seeing a spike of 11 psi and its not even often at all.