Seems like you've had the same problem for 3 or 4 years +

As far as 15 psi being too high. You just set what works. If you limit yourself to "I will only launch this high or this much boost" Then that can keep you from finding the sweet spot.

 

Not second guessing anything or anyone, but send the tune up and a log (don't post here) if you want any decent feedback.

You might need more boost, and you might just be hitting a weird spot in the maps in first gear that wasn't be hit on the dyno. Turbos spool and take different paths thru the maps under different loads.

What is your tuner saying after he reviews the logs?

 

if you are bogging you need to put more in it on the launch. what are your anti-lag settings to build boost at a standstill?

you can also try launching at a higher rpm. when i had a stock b16 motor in my teg on a turbo that was kinda big for the motor i had to raise the 2 step to 9000 so I wouldn't bog on launch.

 

your 1/8th mile is terrible for that mph lol.

 

If you get that down to a 1.6 60 foot you will be at a 10.30 ET. The time slip and logs tell you everything you need to know.

 

you should try setting the two step,closer to the rpm where you made max torque

 

I lowered my timing a bit in the parts I normally see in 1st gear.

 

the tuner has actually went to the track with me to solve this issue we pulled timing, we raised 2 step, we raised boost we did quite a bit actually and still 8200rpm 12psi in 2 step launch and wham falls right to 4200 rpm.

Dester you are correct, and the only thing that has not changed in 4 years is the ems.

i do notice something wierd in 2 step i get 3-4 good strong pops like 2 step does, and then it makes like a surging sound up down up down like its losing it or something.

 

what trans or final drive is in this car.

 

Not ******* your tuner but it sounds like your getting into parts of the map that are not tuned very well. Are the AF's ok when it boggs like that? I had similar results with my s2000 and it was just the part of the map I wouldent see on the dyno just at the track (under launching only). (just got super rich)

Again I am not hating just trying to help.

posting a screen shot of your map would help

 

stock gsr tranny

carbon synchros.

4.4 f.d

liberty cuff

quafe

axles are dss 3.9

 

yah im not here to bash on my tuner because he has been pretty good so far, and im good with that.

im going to do this raise my 2 step tp 8300/8100, and set the boost off the line at 13psi if it bogs then ill go to 15psi. I do not want to have to raise the 2 step higher than 8400/8200 because the rods are eagles and im not comfy at that point at all.

 

if it spins ill lower it till it doesnt

 

That may very well be your problem. If you're launching right when it starts the "surging" issue you're witnessing, I'm guessing the car is not making any boost at that very moment. Don't really know how to solve that issue, but I think if you launch right in the thick of the anitlag burts (pops), it won't bog, because you'll be right in the thick of boost.

I had a similar problem with my car, but it was the opposite; it would start off late first, THEN build antilag bursts late while I was on the two-step. When I was launching out of the bursts, I wouldn't build boost, but in the thick of the bursts, the car would launch fine (I was building 12 psi with antilag).

Only thing I can suggest is retard more timimg at the launch to build more boost, maybe the "fall off" will clear itself up.

 

now we are getting somewhere someone has had the exact same issue im hearing usually when i tell people what i hear they say they dont but it is noticable to me

 

i have noticed other pop for ever while sitting there, and well mine doesnt lol

 

And it's probably something that can be tuned out. With the right amount of fuel dumping into the manifold, antilag shouldn't stop or fall off until you let off the throttle. But I'm almost certain that it'll solve your issue if you can keep your bursts constant during two-step. Good luck.

 

thanx man

 

what are your antilag settings?

you need to pull timing and add fuel to build boost at a standstill. these settings are what allows you to have power off the line.

I went 7.43 in the 1/8th with a stock B16 motor on pump gas in my full interior integra and was still mad at myself for not having a better short track. My two-step is set at 9000 rpm and it builds up to 20 psi off the line.

if you have 5.5 psi in your slicks you could even spin them all the way through first gear and still have a nice 60'

do you have datalogs of your run where the car bogs? can you post a plot that shows rpm, boost, timing vs time?

 

where is that found at

can show my 2 step box that hows the settings is this what you are meaning

 

Dester hit this on the head i have thrown a ton of money at this thing, and it has performed in every area except the short track.

i pulled a 1.70/7.0@112 last weekend thats the best it has ever seen

that was on ksport control coilovers, and since i have the blox in the rear now with the 18k srping and the fork style lca's from blox for them. i also preloaded the front a little bit more as well.

 

what EMS are you on? and is the 2-step set up from the EMS or by use of a separate box? what settings on the box if it's separate?

 

its all in series 1 aem except my ign wich is a pro14

 

Running E85 right?

What sort of AFRs are you running? I might try leaning things out a bit (well, probably like 1-2 full points) on the lag and in the "not full boost, but still in boost" cells.

 

well i have had an out reach, and by someone local to help me get this 2 step figured out wich he sorta laready has we just need to get togather and see if it helps