Not sure if they are compatible Max vs. I35, however in theory you'd get BETTER mpg since TS is leaning out the super rich A/F ratio at WOT.
BTW, the ECU won't affect mpg during "normal" closed-loop driving.
BTW, the ECU won't affect mpg during "normal" closed-loop driving.
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Originally Posted by MaDdFLaSheR
hmm the ecu sounds like a pretty interesting mod.. im assuming it'll fit my auto i35. one question i have about this is how badly does this affect your mpg?
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Anyways, the J&S isn't mine, it's for sale on another board I saw and will be gone quick. Wish I had the money to buy.
Alex who?
Donkey Originally Posted by IceY2K1
Whew! Thought you'd ZEX'd your engine to death.Anyways, the J&S isn't mine, it's for sale on another board I saw and will be gone quick. Wish I had the money to buy.
Alex who?
Senior Member
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whats the 2002 and 2003 maxima stock dyno look like and how many hps is it actually producing.
For the auto's, it's around 190-195 HP. For the manuals, it's around 202-207 HP.whats the 2002 and 2003 maxima stock dyno look like and how many hps is it actually producing.
A copy of the manual dyno can be found on my homepage in the dyno section.
STD...you NEED to get the dyno "expert" to SAE correct that for you.
Or better...get it on DISK.
Or better...get it on DISK.
lol.....same dyno facilities? both STD #'s....will be going back there soon after servicing car- my dyno
was @ 31k w/ over 800 miles in need of an oil change/BG44K
was @ 31k w/ over 800 miles in need of an oil change/BG44K
Member
Great numbers on that is there any one else have a good dyno with the ecu want to compare a/f on them see if it is consistant with that headers vs no headers 
Even though the numbers are STD..we went to the same dyno which can give us a good comparison to each other of the power we are making. Keep in mind you are a 6 spd though.
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you are definitly making more power...posted my chart to see maybe where the ECU mod does its job.....Originally Posted by juice
Even though the numbers are STD..we went to the same dyno which can give us a good comparison to each other of the power we are making. Keep in mind you are a 6 spd though.
noticed your torque line maxes @3200 rpm then takes a dip.....till 3800rpm....could it be the headers?
If I remember correctly he did a best of 224 with just the headers. He then added the ECU and dyno'd at 218 and was running extremely rich. TS reflashed the ECU and the results are the 231 hp runs in this thread.
Erik correct me if I'm wrong please.
Erik correct me if I'm wrong please.
Alright I just need 16970.00 more and the are all mine
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probally get away with ecu.Originally Posted by Prodigy
I'm guessing the ECU and headers will void the factory warranty, right? BTW sorry if this has already been discussed...
Senior Member
how it voids the warranty? TS says "no error codes" so the dealer they wont know that you have a ECU...
Senior Member
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UMM. Originally Posted by wavedog
Ok stupid newbie question. How does Nissan come up with the 255hp stock?
. You know these are wheel dynos, Right?Nissan and everyother car company tells you the HP at the crank.
Senior Member
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can you tell me how you "play" with the timing? just out of curiousity. thank youOriginally Posted by blubyu2k2
well the cars in the shop and I have to decide if I want to keep the nitrous. If I do I will have to play the timing a little more conservative. Ohh and also the money isn't available quite yet
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have to ask TS that one. They have the program to advance or retard the timing throughout the curve. Now that I'm back to all motor I plan to go aggressive as I can on the timing.Originally Posted by Tally Max
can you tell me how you "play" with the timing? just out of curiousity. thank you
Member
"He said that the I will definitely gain more torque and a few ponies if I put my main cat back on"
If it were me I 'd look for a new tuner, that is ridiculous advice. Reinstall something that doesn't flow as well as what you have? An engine is basically an air pump so the more air you pass the more power you make. Also, you need to look at timing events of cam to see what the motor is doing. Is your torque down from stock? I would look to installing a different cam, yes it's expensive but if picked right the gains you'll see will put a smile on your face.
I'm new to Maxima stuff and having trouble finding any kind of usable info on these cars but I will say from past experiences that your car will benefit greatly from a cam change particularly one that favors intake over exhaust. Your cam is blowing most of air out of chamber before the burn explaining why torque is down (if down at all) by letting more air in you'll see more of a torque gain along with HP gains.
Your a/f is way off the dip is from the drastic drop in a/f, shoot for 12.8-13.2 steadily across the board. You're losing power with a a/f of 11:1, way too rich! That's better suited to a SC application.
If it were me I 'd look for a new tuner, that is ridiculous advice. Reinstall something that doesn't flow as well as what you have? An engine is basically an air pump so the more air you pass the more power you make. Also, you need to look at timing events of cam to see what the motor is doing. Is your torque down from stock? I would look to installing a different cam, yes it's expensive but if picked right the gains you'll see will put a smile on your face.
I'm new to Maxima stuff and having trouble finding any kind of usable info on these cars but I will say from past experiences that your car will benefit greatly from a cam change particularly one that favors intake over exhaust. Your cam is blowing most of air out of chamber before the burn explaining why torque is down (if down at all) by letting more air in you'll see more of a torque gain along with HP gains.
Your a/f is way off the dip is from the drastic drop in a/f, shoot for 12.8-13.2 steadily across the board. You're losing power with a a/f of 11:1, way too rich! That's better suited to a SC application.
Quote:
If it were me I 'd look for a new tuner, that is ridiculous advice. Reinstall something that doesn't flow as well as what you have? An engine is basically an air pump so the more air you pass the more power you make. Also, you need to look at timing events of cam to see what the motor is doing. Is your torque down from stock? I would look to installing a different cam, yes it's expensive but if picked right the gains you'll see will put a smile on your face.
I'm new to Maxima stuff and having trouble finding any kind of usable info on these cars but I will say from past experiences that your car will benefit greatly from a cam change particularly one that favors intake over exhaust. Your cam is blowing most of air out of chamber before the burn explaining why torque is down (if down at all) by letting more air in you'll see more of a torque gain along with HP gains.
Your a/f is way off the dip is from the drastic drop in a/f, shoot for 12.8-13.2 steadily across the board. You're losing power with a a/f of 11:1, way too rich! That's better suited to a SC application.
I wouldn't totally rule out that putting the main cat back on in place of straight pipe will add power. Their has been enough anecdotal evidence that makes me consider it a possibility. Also if you read the attached thread you'll see where Warpspeed performance lost power replacing the main cats with straight pipes on the Nissan 5.6L engine. They also claim to know of 3 fourth gens that ran a slower 1/4 mile after replacing the stock cat with straight pipes.Originally Posted by MikeS
"He said that the I will definitely gain more torque and a few ponies if I put my main cat back on"If it were me I 'd look for a new tuner, that is ridiculous advice. Reinstall something that doesn't flow as well as what you have? An engine is basically an air pump so the more air you pass the more power you make. Also, you need to look at timing events of cam to see what the motor is doing. Is your torque down from stock? I would look to installing a different cam, yes it's expensive but if picked right the gains you'll see will put a smile on your face.
I'm new to Maxima stuff and having trouble finding any kind of usable info on these cars but I will say from past experiences that your car will benefit greatly from a cam change particularly one that favors intake over exhaust. Your cam is blowing most of air out of chamber before the burn explaining why torque is down (if down at all) by letting more air in you'll see more of a torque gain along with HP gains.
Your a/f is way off the dip is from the drastic drop in a/f, shoot for 12.8-13.2 steadily across the board. You're losing power with a a/f of 11:1, way too rich! That's better suited to a SC application.
http://forums.maxima.org/showthread....converter+loss
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I got 272 at the crank.Originally Posted by E55AMG2
damn, great #'s that means at the crank you are making close to 300 hp and 300 lb/ft. Very nice.
Did I do my math wrong, or was the 300 just a best guess? I thought you divided the whp by .85 (to get back the ~15% loss).
Senior Member
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255 is at the crank while his gains are wheel horsepower...big differenceOriginally Posted by wavedog
Ok stupid newbie question. How does Nissan come up with the 255hp stock?
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Did I do my math wrong, or was the 300 just a best guess? I thought you divided the whp by .85 (to get back the ~15% loss).
He's an auto so drivetrain loss is about 20%.Originally Posted by FrankTheBunny
I got 272 at the crank.Did I do my math wrong, or was the 300 just a best guess? I thought you divided the whp by .85 (to get back the ~15% loss).
Member
"I wouldn't totally rule out that putting the main cat back on in place of straight pipe will add power. Their has been enough anecdotal evidence that makes me consider it a possibility. Also if you read the attached thread you'll see where Warpspeed performance lost power replacing the main cats with straight pipes on the Nissan 5.6L engine. They also claim to know of 3 fourth gens that ran a slower 1/4 mile after replacing the stock cat with straight pipes."
Because the cam was designed for the restrictive exhaust..bask pressure is BAD period otherwise aftermarket parts would be smaller not larger. You need to retune the car for these parts or better yet get a cam that will benefit from new parts. It was quicker because it was making more torque down low and we all know torque is what moves the car. My past project was a Mustang and I had the ability to go into computer program and modify timing tables, fuel tables, MAF function, etc.. The last motor I ran in it was a 331ci stroker motor, I gained 30hp just through tuning.
Maxima heads have a hemi style chamber which are very efficient, very efficient heads like lots of timing down low but little in higher rpms, they also do not need lots of fuel. From the a/f graphs I've seen these TS reflashes are way too rich 3000rpm on particularly the one in this thread. He is leaving quite a bit of performance on the table.
Because the cam was designed for the restrictive exhaust..bask pressure is BAD period otherwise aftermarket parts would be smaller not larger. You need to retune the car for these parts or better yet get a cam that will benefit from new parts. It was quicker because it was making more torque down low and we all know torque is what moves the car. My past project was a Mustang and I had the ability to go into computer program and modify timing tables, fuel tables, MAF function, etc.. The last motor I ran in it was a 331ci stroker motor, I gained 30hp just through tuning.
Maxima heads have a hemi style chamber which are very efficient, very efficient heads like lots of timing down low but little in higher rpms, they also do not need lots of fuel. From the a/f graphs I've seen these TS reflashes are way too rich 3000rpm on particularly the one in this thread. He is leaving quite a bit of performance on the table.
Senior Member
Quote:
http://store.yahoo.com/sgpracing-store/tomei1.html
OR these:
http://www.jimwolftechnology.com/cus...asp?PartID=443
Originally Posted by IceY2K1
OR these:http://store.yahoo.com/sgpracing-store/tomei1.html
OR these:
http://www.jimwolftechnology.com/cus...asp?PartID=443
Those are expensive! Course, its a major engine part. Any real benefits of these on a N/A engine? I plan on getting some headers and a new exhaust as well as a CAI this summer...and now a new ECU......but will this be worth the 1200 bucks?
Member
Quote:
May I ask why you are giving up the bottle? I'm curious...Originally Posted by blubyu2k2
have to ask TS that one. They have the program to advance or retard the timing throughout the curve. Now that I'm back to all motor I plan to go aggressive as I can on the timing.
Gears