Any tips? Im slower than any klze ive seen..

fieromx3 · Post by **fieromx3** » October 16th, 2006, 9:34 pm

10:1 compression cars do not NEED high octane gas even cars that have the ecu tuned for it dont need it

Steeb · Post by **Steeb** » October 16th, 2006, 9:43 pm

start another thread ill be happy to contribute

PWRD_BY_HKS · Post by **PWRD_BY_HKS** » October 17th, 2006, 1:18 am

i think i should drive it ....hector, you never know, i might get a lower time....you gotta consider your motor mounts are pretty much gone. you need to remember your tires are not really performance as a matter a fact i felt them slipping pretty bad when i drove it .....in my personal opinion i think controlling wheel spin will make a big difference

mx3autozam · Post by **mx3autozam** » October 17th, 2006, 1:47 am

PWRD_BY_HKS wrote:i think i should drive it ....hector, you never know, i might get a lower time....you gotta consider your motor mounts are pretty much gone. you need to remember your tires are not really performance as a matter a fact i felt them slipping pretty bad when i drove it .....in my personal opinion i think controlling wheel spin will make a big difference

oh yes it does. get better tires and fill those mounts!

Post by **Custommx3** » October 17th, 2006, 10:00 am

fieromx3 wrote:10:1 compression cars do not NEED high octane gas even cars that have the ecu tuned for it dont need it

Go ahead and run 87, then enjoy the ping and knock.

mx3autozam · Post by **mx3autozam** » October 17th, 2006, 12:02 pm

Custommx3 wrote:
fieromx3 wrote:10:1 compression cars do not NEED high octane gas even cars that have the ecu tuned for it dont need it
Go ahead and run 87, then enjoy the ping and knock.

It won't ping or knock. We ahve knock sensor. It will retard the timing is it detects any knock. therefore yu won't have any power. Just put 91octane in it please.

fieromx3 · Post by **fieromx3** » October 17th, 2006, 1:43 pm

i did go ahead and try it in my talon at 21psi of boost both our cadillac northstar engines and many other that are supposed to take premium and we had no problems u dont need high octane gas when it says u should..

mxmaz · Post by **mxmaz** » October 17th, 2006, 2:30 pm

To get the most out of your engine, use the recommended octane fuel.

max kl · Post by **max kl** » October 19th, 2006, 12:22 pm

ok i finaly brought the fail safe info home. if the ecm is smart enuph and working correctly the following problems will cause limp mode and make the car run poorly.
air flow meter code 8
atmoshpeheric pressure sensot [inside ecm] code 14
EGR positon sensor code 16
feedback system [o2 sensors ans ecm learning mixture] codes 17 & 24
air intake temp sensor code 10
O2 sensors codes 15 & 23
TPS sensor code 12
coolant temp sensor code 9
the limp mode is not the same for each code but generaly the ecm supplements the sensor value [like code 10 or 9 ecm would simulate a very low temp like -30 so engine runs rich and safe] and stops advancing timing enuph for good performance to keep engine safe.
like i prevously stated i have personaly witnessed 1 ot of 3 k8 ecms go into limp mode the other 2 did not.
both of my kl ecms did tho.

most of the time you will fell the engine buck or slow momentarlly as cel comes on.

max kl · Post by **max kl** » October 19th, 2006, 12:25 pm

well i am currently working on another mx3 at my shop and it has a kf swap. whn the codes are cleared it runs pretty good but when code 69 & 16 pop up it runs crappy.
i checked alldata and there are serian codes that induce limp mode. the ecm cuts ignition timing and tys to drop output.
code 16 egr possitios sensor prob will set limp mode. but not all ecms are so smart. i have run several ecms and only 1 will set codes quickly and run limp mode. at the 8th mile strip i ran 1 second slower with the cel on than if i disconnected the batt and touched the cables togeather to clear ecm memory the car ran great untill code set again.
so im tryn to say the ecm may be cutting power.

Steeb · Post by **Steeb** » October 19th, 2006, 2:03 pm

there are many cars that run 10.1:1 or higher compression that use 87 gas.

octane discussion should be taken to another thread.

MX-SLICK · Post by **MX-SLICK** » October 20th, 2006, 11:39 pm

FAYI: Higher octane gas does nothing different than normal octane gas in an engine that does not require it. Octane is a measure of how much pressure the fuel can withstand before it ignites (all fuel will ignite on its own under a certain pressure) If your engine has HIGH comression, then it may pre-ignite regular octane fuel, this is why high octane fuel is available...because it simply withstands higher pressures without spontaniously igniting. If your engine doesn't need it,..... then puting it in you car is like throwing money away..because it does nothing. High octane fuel does not burn cleaner, does not burn hotter, and does not burn "more evenly" You would be suprised if you asked around and found out how many people mindlessly fill up with high octane fuel...I have heard people say "high octane fuel makes your car last longer" or "it burns cleaner, or hotter, or better" when it doesn't....Im sure most of you guys already know this, but I think it is important for somebody who might not know this to learn and stop wasting money at the pumps....

hgallegos915 · Post by **hgallegos915** » October 21st, 2006, 1:14 am

hey, I founf out that it is a real ze. I checked and has flat pistons. Also I have code 69. I remember a buddy of mine has a ze and always wondered why it was a bit slow.. he has code 69 also.. I do feel as if the timing is retarted.

Rudy when you mdrove my car its nothing compared to how it feels now. More power. Correct ecu and propper vris points. As for the egr codes.. I will simply plug in the egr (not to the engine) and see what happenes. Same thing with the fan temp control sensor. That shoud clear those codes.. i hope. Im almost certain its in lymp mode.. The pistons are SO clean b tw.. excelt number 2. It has a bit of carbon.

I will try kl3 ecu and je50 vaf and see what it does.

hgallegos915 · Post by **hgallegos915** » October 21st, 2006, 1:30 pm

connected egr sensors but lweft the hanging, ecu doesnt give me those codes anymore. I did a 0-60 with spinning tires in 1st gear and i got sorta like a 7 sec. I need to fix the tire problem. Ill load the vid in vid section. The car feels more "peppier" I feel the pull.. sorta.. Ill get it dynod once timing belt gets replaced and engine mount.

end of thread no need to reply

its gone long enough LOL