Ohhhhh ok gotcha.

 

thank you lol

 

your tq curve looks terrible and your hp really falls off after 6100rpms.

on my stock pulley setup with just h/e, meth, and cutout, I was making over 190ft/lbs from 3k all the way to 7400rpms. My peak tq was 201 from 4000-5100, and my hp steadily climbed to almost 7K and then just leveled off.

I'd say you need a better tune and also some cooling mods. make the tune leaner around 3K so that you build your tq up quicker. The way your tune is lean and gets rich from 2k-3k, move that up so that it does that from 3K-4k.

 

Noteworthy are a 350z, '05 STi, one of the new Altima coupes, Audi TT quattro, modded Evo VIII, Calibert SRT-4......

.....that's about all i can think of that are worth telling. Might be a few I've missed.

 

My lightly modded ( CAI , Cat delete , and a flowmaster muffler) 95 LT1 Z went 13.60's at 105 all day long with a 13.58 @107 best (granted it was a 6speed) . Have you been to the track yet ? if so what times have you ran?

 

Where was the wideband sensor put during the dyno? Where we had my wideband tuning it or in the muffler?

 

in the muffler

 

yep i put down 222whp and 197tq with my mods so dont feel surprisedhahaha

 

haha, yeah

 

I put down 225 on a Mustang dyno w/ the mods listed below before my tune..... I was comtemplating stg 2 w/ a 2.85? but I afraid I will open a new can of worms

 

you will open a new can of worms. Don't know how much of this thread you've read. But right now I have the Stage II with a 2.9 and a tune. The StageII 42#er's can't handle it. I'm losing power because of it.

You should do what I'm doing:

Heat Exchanger
60#ers
1 Range colder NGK's
2.8"
Re-tune

I should make some good power by doing it right this time.

 

That seems like a nice combo for power, thats what most our stage kit owners have and they typically see 255 whp or so. What kind of timing is the tune running?

 

I've read a bit here and there.... kinda "greek" to me
thanks for the advice.... more importantly, your honesty!!

that would get kinda pricey as I don't do my own work..... I need a G85 trans more than anything

 

haha, I know what you mean. I only know what little i do by saturating myself with car stuff everyday (mainly cuz I'm a huge car enthusiast and it interests me). As far as the tuning aspect, I still don't understand half of it. I'm just barely starting too because of the questions I've been asking here lately.

I still don't fully understand what it means to advance or retard my timing or adjust my AFR up and down. I mean, I know what it does physically inside the engine, but I don't know what it means power-wise if I take my timing up vs. retarding it and how that is effected by running leaner or richer.

I wish I knew. Still a little advanced for me to know what Brian was doing while he was tuning. I just let him do his thing and didn't ask him too many questions because I wouldn't have understood it anyway. I don't know what he advanced it to, though.

 

I am not saying your car works bad, I also never said anything about you being stupid, I am just saying that dynos are only a tuning tool, and that everyone will be different based on a ton of different factors..people to often look at peak hp numbers or dyno #'s. he has a 106mph trap.

I see a ton of posts on here about stockers dynoing like 225-230 whp, same as some stage 2 or better #'s, yet none seem to run anywhere near this guys trap with his mods, yet have roughly the same power?

I would just take these #' with a grain of salt

 

I think exsoccer took things a little excessivly... He was just stating facts... dynos are dynos.. And no one is saying your slow...

some people just care wayy to much.

 

aaaaaaaaaaand we're back on topic. Thanks.

 

Well his peak torque is 220, but at the begining and end of his curve is less than 175. That is a massive swing. I only make 4 more ft/lbs of torque then he does, but at ~6,900rpms (where I hit peak hp) I'm still making a touch more than 204ft/lbs of torque.

We're both using a 2.9" pulley. But through my whole powerband, I seem to have half the drop from peak torque that he does.

And it is not just from the 60# injectors and 4.2l TB. Without those, using 42# injectors, I made 251hp @ ~6,400rpm and 221ft/lbs @ ~4,300rpm. I didn't tune it higher because of injector duty cycle and afr going wonky, though on a run to 7k I did put down ~257hp with a low point of ~192ft/lbs.

He needs to run progressively richer as he goes up in rpms (I run from 11.8 to 11.3), tweak his timing until he finds what his engine likes (I actually found I made more power with slightly less timing then the most I could run, but it varies from engine to engine), and fix his VE and MAF tables (which is why his AFR most likely isn't right).

Exactly what I was saying in my first post, though you went more detailed. My HP above ~6,900rpm slowly trickles down.

 

yeah, definitely will be taking this all into consideration when winter mods are complete.

Already PM'd another member about possibly getting the H/E and Wideband I need. Should get me off to a good start.

 

i sugguest an cold air intake (ik u have a filter and airbox mod), 60's and tune and some cooling mods

 

After reading every single post in this thread, I can agree and disagree with some of the post. The facts I have seen are the following:

1.) He does need bigger injectors. (60s)
2.) He does need cooling mods. (H/E, dual pass)
3.) LSJ seems to like AFR around 11.5 (varries from car to car, engine to engine)
4.) One step colder plugs would be good enough. Not 2 steps.
5.) A 2.8 pulley is the smallest pulley you should run on the M62.
With that said, he could stick with the 2.9, add bigger injectors, cooling mods and a good dyno tune and still pull off much better numbers.
6.) If he does go with a 2.8, water/meth injection would = even bigger numbers.

The good news is, the dyno where we went is close and he will be doing pulls on the same dyno. I personally feel Roadrage could of ended up at a different dyno putting down 5-10 more torq and 5-10 more hp. You really do have to take a dyno with a grain of salt, other then tunning. It matter what you run in the 1/4th mile and how well you trap. Dynos tell a great story though and where you can improve.

 

He can get away with the 2.9 if he throws water injection on it. Another reason his IDC's are high is I turned on his piston protection at like 5k because he does not have a wideband to monitor it. I got away with a 2.9 and 42s on mine with water injection, IDCs were high 80s low 90s, nothing to get too excited about.

 

^ sounds like a good safe tuner. Would rather have someone tune me safe and keep those things in mind. What exactly does piston protection do when activated?

 

Just adds fuel. I have mine set to 7000 on a 7200 rpm redline. If you have a wideband you can leave it off, just keep an eye on it. We tuned his with all the fuel adders off to get the maf on then I turned the piston protection back on.

 

oic. possibly why the back of my car gets black and people have seen black/grey smoke out my tailpipe under WOT? it's possibly going rich in micro-increments?