911GT2

I just completed donbearikki's non-seq, and I gotta say, i love it, but.

I don't get the full 10psi till 5500+. I have an intake and a downpipe, so i was hoping for 3800~.

Is there a chance maybe the TCA door isn't wired open enough? or maybe something else?

Any help is great!

poss

iTrader: (5)

is the charge relief valve either capped or hooked up like the standard bypass valve?

911GT2

The hose that originally went from the LIM to the CRV is capped, everything else on it remains intact. There is a short hose (maybe 3") from the y-pipe to it, and then a longer hose from it to the intake.

es

If you've got the factory cat you're going to have slow spool. 3" all the way back is usually how full NS performs best, & that is why mazda came up with the Seq system.

You could try a 3" high flow cat...

VudooFD3S

The CRV acts like a second BOV. I've been getting around 8psi. I suspect that the CRV blows off too soon.
I'm gonna cap it and do some test runs to see what's up.

rynberg

How can you say you love it when you have less power below 4000 rpm and the exact same above 5000 rpm as sequential?

I get 10 psi by 2800 rpm (or earlier) with a barely noticeable transition. Even non-sequential at its best only develops full boost on both twins 1000 rpm before sequential. Hell, small to medium singles spool as fast/faster than non-sequential. I'll trade slightly less power from 4k-5k rpm for substantially more from 2k to 4k rpm any day of the week.

911GT2

Well, what i loveis solid, reliable boost all the way to redline. Before, i was seeing 7 psi at 4500+ if it was lucky, and instead of diagnosing that problem, I decided to go non-seq. What i love is the fact that I had a boost problem, and it is solveable this way.

Yes, seq is nice, but the billion solenoids and check valves and chambers that go along with it are bound to break eventually, and I'd like to spend my time driving my car, rather than chasing boost problems.

911GT2

Whataya mean cap it, cap the hose that I spliced into from the stock BOV? So drive w/o a BOV? I guess it might work, but you'd have to be real easy with the gas.

BoostCrzy

i just completed my non-seq. job and am extremely pleased!!!....full boost comes in strong about 3500-4000 rpm....and what a kick!!!......anyway, check that tca door....i thought mine was fully open and found it to be only half way......and be sure the valve on the y-pipe is fully disconnected and capped off.......

911GT2

High flow cat is on my list of things to get, but I thought with just the stock exhaust, and intake spool up was supposed to be around 4k. rpm. Could the clog be causing that much backpressure?

911GT2

Which valve on the y pipe? CRV or CCV?

They're all capped tight either way. and my TCA door looks just like dontbearikkis picture on his website.

What kind of mods do you have?

BoostCrzy

im seeing much more power below 5k now....much better than sequential.....i also have 3in. dp,mp,cb,and apexi intakes....additional fuel from 2 720cc injectors in a greddy elbow and a haltech f5 just to keep things rich.....next step is a boost controller and a couple of dyno pulls.....

BoostCrzy

this setup only works good if you have an open exhaust and intake.....otherwise it will spool slow......and i was seeing some spiking with the stock restrictor pill in the wastegate...so i recommend ditching it as well.....now i get a solid 10psi till redline.....tiny bit of creep in 3rd and 4th.....nothing over 1psi....but i also am in fl. so its hot here......

VudooFD3S

No, i mean cap, the CRV itself. You know how it's connected to a big hose that runs to the intake? I removed that hose and capped the CRV.
You still have a BOV. Capping the CRV has nothing to do w/ the BOV...

911GT2

Ok, i understand that, but what will that do (pardon my ignorance on this topic)?

poss

iTrader: (5)

eliminate a possible leak

BoostCrzy

get a mp, cb, and some fuel........you probably did the conversion correctly...it just needs to breathe......

911GT2

Can't get a midpipe, cus i live in MASS and they don't allow it, and i don't feel like putting the cat on once a year to pass an emissions test, but i'll get a high flow and a cat-back when i get the money.

ISUposs, I don't think the CRV would only leak sometimes, and not at others. i.e., why would it leak early in the rev range, giving me slow build of boost, but then all of a sudden not leak and vwala, i get 10psi?

I agree with BoostCrzy that it's a flow issue, too much exhaust restriction. I'll live with it until I get a cat cus it's a lot faster than it was with my low 2ndary boost before.

Jedon

I did the same conversion and have a simular problem, I can't seem to get more than 9psi.
I T-ed the CRV to the ABV, wired the TCA open etc.
I have the stock pre-cat :-(
I do have a catback, midpipe, intake, IC, PFC, Streetport.
It pulls hard from about 4K, I love the power but a few psi more would be fun!

poss

iTrader: (5)

probably already checked this, but make sure there are no boost leaks (y-pipe, crossover pipe, IC piping, couplers, ect.)

the charge control valve is in the open position right? (fixed in the acutator extended position)

if all that stuff is in check, you should have no problem making 12+ psi of boost (with an upgraded ECU of course ) even on stock exhaust components.

also any exhaust leaks before the turbos?

af908

i also just completed the dont be a rikki non seq. i have a quick question: on the two soleniods (turbo precontrol and wastegate) does it matter if the electrical plugs are switched around? some people say to switch them others say not to. what is the point of switching them?will anything bad happen if these plugs are plugged into the wrong soleniod?

911GT2

af908, I switched them to begin with, and could only get 7psi, but when i put them back i got 10psi, so i left them in the stock position.

ISUposs, i have a small leak on the LIM i think, not exhaust but it might cause some loss?

I didn't loook at the CCV to see if it was extended, but thats new to me, never heard of it before, i'll look tomorrow when it's nice out.

In terms of boost leaks, i got a solid 10psi on the primary before the conversion, so i don't see why it would be affected any differently by the non-seq.

I think I've pretty much narrowed it down to the stock cat being restrictive if not clogged, .if i can make 10psi at all the turbos are good right? If so, then i think it's the cat.

spoolage

iTrader: (2)

hmmm.... maybe your secondary turbo is bad...

so before the conversion, the primary was boosting all the way, but then when the secondary one kicked in Im guessing you were loosing boost, so now, the primary is acting as a single turbo w/ the second one possibly producing no/little boost and your loosing pressure.. heh I dunno,

spoolage

iTrader: (2)

af90 as for the two plugs... There should be a white dot on one of the plugs, there was on mine atleast. I keep that on the left connection, seems to have worked best for me. Just switch them around and see what you like, I'm really not posotive which does which, I just went off how the car ran and boosted

BoostCrzy

if they make it to 10psi.....your in good shae...just open her up(exhaust) and add some gas......should be the ticket....