so my ottp stage 2 is in the mail. (finally)
question is i want to go a little more conservative. and eventually run nitrous. so i want to get a 2.9. questions is would i need to retune when i do this? i plan on getting a custom tune but would i be able to run the 2.9 on ottp's tune?
thanks in advance

 

run and use the 2.8/ottps tune till you get the nitrous ready to install. then switch to the 2.9 and have the car tuned on the nitrous.

 

Amen to that.

And if you really wanna switch just put the 2.9 on and go. It will maybe get a touch richer at WOT but nothing drastic

 

cool. i don't think it could get richer when it's barried at 10 on the AFR lol
not like i would be able to notice it get richer.

 

Ya just run the 2.8 till you're ready to run nawzzz then switch it out. Still gotta let me know you're AFR numbers viper haha. I'm curious to compare

 

If its buried at 10 you need to get retuned. Unless you havent put in the OTTP kit yet. Because I believe they command 11.76 at WOT

 

There's not gonna be much of a difference between the two pullies man and y not run the 2.8 on nitrous

 

it's on stock tune. 1st: 12ish 2nd:mid 11's 3rd:low 10.2-10.5 4th:10.0-10.03

 

ok well i have the ottp stage 2 i without dual pass i put down on the dyno today 245 hp 230 trq but after i get the dual pass i wanna go either meth injection or a 50 shot? wich one do you guys recommend. and what pulley should i run?

 

bump

 

it's actually a little leaner than my stock tune.

here's some runs.

http://www.youtube.com/watch?v=wwpQTN856pA

http://www.youtube.com/watch?v=mBM-EyrIYy8

 

can i ask what your shifting at? i just couldnt tell

 

Your car should theoretically run the same on any pulley (as long as its with in the injector limits) because the maf will make the fuel changes when it sees the different airflow from the different pulleys.

There is one important thing to remember though, timing advance. If you drop to a smaller pulley without retuning your chance for knock is greater and if you go to a bigger pulley you could increase your timing with the retune. This is why I like my e85!

There is one last basic thing I would like to say on the matter. There is one last probable reason to not go to a smaller pulley then the tune is listed for. Dropping to a smaller pulley could be going out of the tuned maf range in the tune (assuming they are using the maf). Im sure the vendors know what they are doing and tune these cells in as well.

 

well i'm still not used to being able to redline. so in the first video i shifted at around 6500 out of habbit in 1st and 2nd then 7000 in 3rd

 

i think it's a little slower than it should be, could the learn down be affecting it?

 

dont they lose power after 7000, just curious not sure

 

i heard that the boost bypass bleeds boost after 6500

 

Learn down? Do you mean the case learn? Yes go get that taken care of. As far as the not feeling as fast you should go get your car tuned in and get some cooling mods. Heat soak is a bitch in these cars.

With a tune your bypass shouldnt bleed the boost. Only the gm stock/stage tunes bleed the boost. Well I guess mine doesnt. Think of the slap in the face my car would give me going from 21lb to 12lb in 500 rpms lol.

 

my crank case code hasn't come up yet. and it won't until i lock the car with the key fob. until i get the money i have been locking it from the inside. and right now i have the zzp s3 Heat exchanger. and i'm looking around for an option b at the junkyard

 

I agree. I just installed meth, dual pass, heat exchanger and option b in my car then got it tuned by kennyspec tuesday. WOW what a difference! But my car was running crazy rich the with OTTP canned tune nevermind with meth on top if it. We tuned it in 3rd gear starting at 2000rpm to 7000rpm. He did a chart before and after my tune to compare and looked at time vs speed between the both and i gained 13 mph just in my 3rd gear pull. My car doesnt bleed the boost at all.

 

before you tuned it, did it hesitat before 4,000 rpms? mine is doing that, i'm gonna have to say your right. i'm super rich lol

 

My car would surge a little bit it was so rich

 

If your car is hesitating or surging go get it tuned. Only way to fix it.

 

yea, i know. but thats gonna cost some $$$$. so i'm holding off for a little while