tuned my car tonight

[j-z]

well justin (florida240sx) had control over the wideband and the afc. gotta keep my eyes on the road doing wide open 3rd, and 4th gear pulls. yeah, we was haulin a$$. sucks because i just put my 13 psi spring in my tial yesterday and hit it a few times and the boost went dead on to 13 psi and held there strong for the time i had it floored. well, today when we were doing the pulls i was getting a max of 8 psi. my wastegate dump definately didnt sound nearly as loud as it did yesterday. the only thing that changed from yesterday and today is i finally got my bov welded on today. i know it doesnt have any thing to do with boost leaks. i think its in the wastegate itself. like its stuck open or something. i dont know, but it really pisses me off. im gonna take my dump tube off tomorrow and take a looksy. i hope thats all it is. any suggestions??.also, my bov doesnt really work. its a hks racing bov, and all i hear is compressor surge. what can i do to make it function properly. i have a vacuum manifold where all sources are tapped. i know it has a good source. i had the same kind of bov on my lude with a straight t3 @10psi and it worked perfect. i even took this one apart to polish it, so i know everything is where it should be on the inside of it. i really want it to work because i can feel the bit of spool up time it takes between gears..anyways, besides that shlt it was pretty fun doing consecutive wide open pulls. the air/fuel was good during normal driving with about a 14.7 as the leanest during highway driving. under boost the leanest was 12.2. she pulls pretty good for 8 psi, but something def doesnt feel right with the wastegate. i really hope i dont have to take that spring out again as it was the biggest PITA thing ive done in awhile. had to do it with the wg still attatched to the mani. thanks justin for bringing out the wideband and helping me out! appreciate it mang.

[Florida240sx]

You left me behind after wendy's being your timign is more advanced now. Did it feel stronger??? I'm lost on the wastegate thing unless the spring broke.... let me know.

[j-z]

i couldnt really tell a difference. i was haulin a$$ and just hoping there wasnt any trol around. i think its the wg stuck open just the slightest bit to make 8 psi. it does take little bit longer to get the psi up there now. and i remember this morning i hit it at 13 psi with the wastegate screaming loud. ive never heard about a wg spring breaking and dont think it could. hopefully its just stuck and i can lube it up and hit it with a hammer. hammer should fix it. ill post up tomorrow what happens.

[j-z]

we shouldve pulled the wastegate line off to see what would happen. that def would have told us if it was something specifically with the wg.

[DammitBobby]

I have a Type 1 HKS and it has 2 ports. One port is connected straight off the turbo. The other port is connected to a vacuum port. The second one is for street driving. It will assist and open the bov at lower boost level. Also the HKS has different spring rates for opening at different boost levels.

I would do a pressure test and see if the wastegate or something around the wastegate is leaking air.

[j-z]

well its the same exact kind of bov i had on my lude. on the lude i had the vacuum line hooked up to the bottom side port, and it worked flawless. this is the same way i have mine hooked up on the 240. earlier i put my wg signal line straight onto a nipple on my plenum that i had blocked off. i was thinking maybe everything hooked up on my vacuum manifold was causing the wg to not get a full signal. that didnt do anything with the wg at all, but the bov sounde to let a little bit more air out than before. still surging like a mofo though. ive got a fan cooling everything down right now, so i can pull the dump tube off. i was thinking that maybe the bov did have a stiff spring in it. i just took out a real soft 3.6 psi spring from my tial that i may try to put in there. depends on how it compares to the one thats in there. im completely baffled on how come all of a sudden im not hitting 13 psi anymore when it did that morning. i have no leaks anywhere. anyone ever hear of a wastegate being stuck open? if so, how do you fix it.

[DammitBobby]

The problem is not the signal to the wastegate. If it was getting enough signal it would hold the wastegate closed longer causing the boost to rise. Try blocking off the bov completely and see if it will go to 13psi again. That will let you know if you are having a problem with the bov. If the bov is opening to soon it will bleed off boost or if you have a leak around your bov.

[j-z]

yeah, good call. i was gonna do that, but i forgot lol. anyways i was finally able to get the wg off the mani. took it apart and it looked perfectly fine. dammit, i wish i wouldve remembered about the bov because i think i just waisted a bunch of time. i was sooooo contemplating on putting the 3.6 psi spring in there too along with the 13. since its my minimum, i just said ill get a boost controller. im taking a break right now. my back and calves are killing me. oh yeah, the jgs kit makes it nearly impossible to get the wastegate off the mani, and then pulling the wg out. you can not pull the wg out without removing something. i opted to go for the ps pump as that was the easiest. they shouldve put a 90 off the mani for the wastegate to face pointing downwards so you could easily wrench those bolts off, OR hog the holes out on the existing wg flange and nut and bolt it on. i just gotta put my dump tube back on, and ps pump. im already positive it has something to do with the bov. i noticed it makes a little more hissing noise under boost. wonder what could be wrong with it though? i tightened it down all the way, and same shlt. guess ill take it apart and look at it.

[j-z]

plugged the vacuum line to the bov, and instant 13 psi. wastegate is loud as all hell too. SO now ive got to find out wtf is wrong with the bov. could it be the signal the bov is getting? i took the bov apart and know everything is good inside of it even though theres nothing to it. leads me to believe it is the signal. am i correct using the lower port?

[j-z]

its not the signal either. i took the source from straight of the plenum, and it still does the same thing. guess tomorrow ill take the bov off and blow some compressed air into it and see what happens. suggestions would be nice.

[KATwo40]

Uhhh, the lower port on the BOV is an assist port that is supposed to be connected to the charge pipe via nipple (I just wanted to type that hehe). Your vac signal should go to the top port on the BOV.

[j-z]

alright cool. its been over 3 years since the lude, but i was pretty sure i had it on the bottom port. tomorrow ill put it on the top nipple and see if shell blow off for me hehehe

[edubb11]

Sounds nice, now get that boost issue fixed! I need a hookup to street tune my KA-T. Oh, I'm the guy who bought the tie rod and fuel pump from ya.

So, do you prefer to go by j-z, young hov, or shawn?

[Florida240sx]

Shawn???you mean John??? I got the wideband...Where you out? I'm in Deland...

[Florida240sx]

JZ think you'd be bale to make it out this way to my house> That drive killed me yesterday, didn't get in bed till 12 and then somehting fell in my garage which made me grab the double barrel shotgun, then the dogs started barking, didn't sleep till probably 2....If your able to make out here I can tune you on my street

[edubb11]

Shawn???you mean John??? I got the wideband...Where you out? I'm in Deland...

Nah, just talkin.

Anyhow, I'm out in Altamonte but I am out in your side of town some, my bro in law and sis live out there.

Hook me up w/a street tune!

[Florida240sx]

You able to limp it into deland?? Anyday of the week after 5. Or on weekends, saturday night sunday afternoon... JZ what you doing friday night?? If it doesn't rain I'll be at the track with Jesse

[edubb11]

You able to limp it into deland?? Anyday of the week after 5. Or on weekends, saturday night sunday afternoon... JZ what you doing friday night?? If it doesn't rain I'll be at the track with Jesse

Yeah I should have NO problem getting it to Deland. It runs pretty good without a tune, actually runs on the rich side.

I'll have to get back w/you and let you know when I can get with ya!

Thanks!!!

[Florida240sx]

Would have to be mon-thursday after 5pm. Or following tuesday thereafter. Going to Nopi So i'll be gone next weekend.

[j-z]

haaaa... whats up eric. its funny because theres already another member on here that goes by the name of edub whom i bought my turbo from. thought you were selling your car. anyways, i go by the name of da jiggaman . .justin, i already know i wouldnt be able to drive out to your neck of the woods. i wont be able to go to the track either cause im broke as a joke. did you get to fire any rounds off?? cant wait till the day i can fire some 7.62 rounds out of my sks here at the hizzy.

[Florida240sx]

Dammit forgot to upload your pics. They'll be up tomorrow night in my gallery...

[Kenrik]

Take the BOV and Wastegate signal from a nipple close to the turbo! That's what I did and my boost spikes went away and the BOV works great...

[Florida240sx]

What you mean kenrik??? We got external wastegate. So only place for us to tap is fpr line or brake booster line..... Or are you talking about on the hotpie?

[j-z]

no, you take your bov signal from behind the throttle body or else it doesnt work. you can take your wastegate signal from anywhere. i prefer behind the TB that way i get all the boost my wg is set at. take into account of pressure drop through the intercooler, and youll lose about 1 psi. plus, i dont have any nipples on the compressor housing or any of my charge pipes, and i dont need them for that matter anyways. get back to your stock turbod sr. problem has already been established.

[j-z]

LOL HOLY SH1T!!!!!! damn my fuking ear drum is hurting so bad right now, and ive got a killer headache. i moved the vacuum hose to the top nipple like my good man KAT suggested and voila! greateset sounding bov ever! it opens under the slightest bit of pressure. my car feels alot faster for some reason now too. it took off like a rocket and i wasnt expecting it and hit the rev limiter spining through first and second from a roll and ive gott 255 pzeross out back on 10 inch wide rims. i was doing a full boost pull with the windows down next to some traffic and the wg just echoed straight into my ear drum. im happy now though. it def needs a retune as im flooring it from gear to gear, when i upshift it hits a real laggy spot and takes a split second to get up and hauling arse again. think it needs to be leaned out right where the rpm drops between shifting gears and a little timing advance. hit %64 airflow on my z32 maf...

[Florida240sx]

Got my rims in today. and getting a diff tomorrow... one of my rims has adent on it...Don't know if it will be an issue though....

[j-z]

which ones? the turbo Z rims? when you gonna mount them and install the diff?

[Florida240sx]

All of them got my Z rims on tuesday, my sportmax today. Diff I'm getitng saturday. goign to try to put in on sunday

[KATwo40]

LOL HOLY SH1T!!!!!! damn my fuking ear drum is hurting so bad right now, and ive got a killer headache. i moved the vacuum hose to the top nipple like my good man KAT suggested and voila! greateset sounding bov ever! it opens under the slightest bit of pressure. my car feels alot faster for some reason now too. it took off like a rocket and i wasnt expecting it and hit the rev limiter spining through first and second from a roll and ive gott 255 pzeross out back on 10 inch wide rims. i was doing a full boost pull with the windows down next to some traffic and the wg just echoed straight into my ear drum. im happy now though. it def needs a retune as im flooring it from gear to gear, when i upshift it hits a real laggy spot and takes a split second to get up and hauling arse again. think it needs to be leaned out right where the rpm drops between shifting gears and a little timing advance. hit %64 airflow on my z32 maf...

Glad I could help.

Most likely, your lag issue is caused by the open atmosphere BOV. You will likely not get it tuned out without doing one of the following:

1. Recirculate the BOV outlet (dump between MAF and turbo inlet) or2. Move the MAF to a blow-through setup, between the BOV and the TB. That way, whatever air has blown out hasn't been metered by the MAF yet, so you'll get no silly rich condition causing the stumbling.

[j-z]

already running a blow through setup, and it works great. hey justin, do you think youll be able to make it out this way this weekend? ive got a decent build up of black soot on my bumper right above my muffler. if you can make it out here thatd be great. if you want to come out about the same time you did sat if youre not going to the jax meet, we can hit up the orange/50 meet after we finish. if not, thats cool, but itd be sweet if you could.