Sorry but another newbie question.... What benefits do you get by reseting the ecu?

 

[QUOTE=1SWT02]Just had the Hotshot headers installed and Wow! These things are great!
With the windows up it seems to be as quiet as it was stock and slightly louder with the windows down.[/QUOTE

i'm installing my HS headers next week
1swt02, did you notice any real gains throughout the rpm range?

 

The whole exhaust is stock other than the headers. Yeah I was worried about the noise, after seen other posts.

The whole car feel different, traction is a problem in first gear.

 

i have baaaad traction problems in first gear but then again i have the best tires in the world...Potenza's baby!!!

 

Good job! Glad to hear that it actually gives some HP gains. Not like the Stillen Headers.

 

 

Quick update: AutoLink was closed on Saturday due to a drift event, the dyno was re-scheduled for Wednesday morning.
Re: Traction The car rides on some 245/35 R19 Falkens and tracton wasn't a problem when launched normally @ low RPM's.

 

Ah, so your the one that Hotshot keeps talking about. I've talked to them every couple of days, talking to Martha and asking if you've done your dyno. So, I guess she was right that you'll be getting your dyno this Wednesday then....good. Your dyno is either going to make me buy these headers or not. Please post the results immedietly when you get done.

 

Yep, I'm they guys who kept bugging them about the headers.
I should have the dyno numbers later on today.

 

Glad to hear it. I hope the numbers are good, which I'm sure they'll be.

 

anxiously awaiting the dyno #'s

 

Speaking of 2K-2K1 Headers...Do they exist? Has anybody dyno'd them? I know headers are big for 2K2+...

I went to SWA website, where I thought I saw them before...but I dont see them now....what drugs am I on?

 

Here you go.

http://store.yahoo.com/southwestauto...newitpehe.html

 

:waits for dyno:

 

i am going to buy if the numbers are good!!!!

 

i am going to buy if the numbers are good!!!! and then i will sell my cattman y-pipe

 

so.... lets get some #'s up here! maybe gains were so good the Max is gonna be raced all night?

 

Ok, the unofficial dyno numbers are 20whp and 17lbs ft. Here's a link to the dyno.
http://www.hotshot.com/images/maximadynocombo.jpg

 

Sounds good. Unfortunately that dyno chart is extremely hard to read. It looks like they did two runs of each setup and that the headers made power throughout the rpm range. What RPM does the chart start at? I can't read it.

 

Looks about the same power as they make on the Altima.

 

The power curves look a bit funny, but the results look good. What type of dyno was the test performed on, and are the results SAE corrected??

 

guess i'm the first to be REALLY excited... 20 whp and 17 ft lbs?? holy crap thats awsome! I know where my paychecks are goin now!!! WOOHOO Thanks for the dynos and bein the tester for these headers!

 

Are the headers available yet for a 2000 Max?

 

i don't think its gonna happen. besides, cattman has headers out for our cars

 

The HS headers should work on a 2k/2k1 maxima just like the cattman headers do. You just have to relocate the o2 sensors behind the cat. Somebody correct me if im wrong!

 

what kind of dyno was this done on? were the numbers correct? what was the temp? was the car completely stock before and with the headers? no other mods whatsoever on all the runs correct? IF the car was completely stock and the only thing done was the headers those are some stout numbers. I'd like to hear some details though.

 

2kGLE: the temp is unimportant if the dyno was done properly. The SAE corrections will take care of this. The type of dyno does matter however, the best is the dynojet 238C. Also, mods do affect the final outcome, but not by much.....

 

yeah, if the dynos were corrected the temp doesnt matter. And yeah the dyno they used makes a huge difference. For instance if that was done on a dyno dynamics dyno these numbers would be unblievable, but on a dynojet it would be a different story (still good #s of course). I think mods affect the final outcome by a lot! For example if the first dyno was stock, and the second dyno was with an intake and rear section I wouldnt be impressed at all. But im sure the car was totally stock except for headers; I just wanted confirmation.

 

The car was completely stock on both runs (stock tires, exhaust and intake). I did have an oil change in between but that couldn't have made a difference. One thing I did notice was the runs were done in third gear, is this right? I had heard something about fourth gear being the proper gear.

 

Oh yeah, now you guys see why there was a big difference after 4K.

 

well, on an automatic, the proper gear is 3rd (1.00:1 ratio) and 4th is the proper gear on a manual. If you lay down #s in third, they will be artificially high (esp the TQ). Also what model dyno did u use to do the test, and were the #'s u got SAE corrected??

 

The guys said it was a mustang dyno. MY car is a 6sp. Why would corr. make a difference if there were before and after runs?
I did get a 4th gear run on my own and the numbers are actually higher not lower.

 

Corrections make a difference in that the #s are adjusted to a std temp and barometric pressure via an algorithm written into the software. Basically, If i run my max on a 105 degree day that is hot and humid here in miami, then make another run on a 50 degree, dry day somewhere else. The lower temp and drier air run will be significantly more powerful. Someone caught onto this, so the SAE made standard conditions and created formulas to adjust the #s so that anyone can compare dynos of similar cars (if they dynos are the exact same model and settings) even if one is on alaska and the other is in brazil. The mustang dyno usually reads higher than a Dynojet, and depending on what they have their sea level set to, it can be alot or a little. Post the exact before and after #s if u can. Thanks

PS: Im not knocking you or the work you did, believe me, it is much appreciated. I am just curious as to your scientific method. Therefore, when I get my headers, i can do the same test as you and compare my results.

 

Don't worry, this is my first time having a dyno done. I will ask the shop tomorrow regarding the corr. As for temp, is was pretty much the same, cool what it actually was, I don't know.
Just to let you know the 4th gear run, posted 251 Hp

 

I am going to hopefully be dynoing my car tomorrow. We shall see what an improvement there is over my intake and full exhaust.

 

Thats a great #, what was the TQ? I am curious to see what the corrected #s are.....

 

237TQ, so should I go by these #'s, right?
They look better (higher).

 

Hmm, no go by the corrected ones. Also Im curious as to why your TQ was lower than the HP. Every maxima dyno I have ever done has resulted in the opposite. Anyways, re-dyno with SAE correction and post the #s.

 

I meant 3rd or 4th gear, hopefully these are corrected and they would be O.K.

 

4th gear, cause it has the correct gear ratio (1.00:1).