for those of you that know or have posted to help me, thanks alot for the help so far! As far as the alternator/water pump belt breaking I have replaced all the belts and tightened some oil lines so now I have normal temps and no oil leak! yeahhhhh! Anyways the last problem I have is the turbo is only spooling to about 3 to 5 psi! I have an aftermarket gauge (hks) so I know its not the gauge and the seat of the pants dyno tells me the same. Do any of you guys know what could be wrong? My mufflers are old and have a hole in one of them, is there any way that a muffler could be clogging the passage? I have replaced all gaskets and everything is tightened very well. Any suggestions? no smog or cats. Thanks

 

anyone?

 

someone? 88TII with all the usual mods:

tid
safc
720cc secondaries
rx7.com fuel pump
upgraded compressor on turbo
msd6a
hks exhaust (no cats)

 

got a BC? what's the status on the wastegate?

 

Title updated, so that you might actually get someone to read the thread...

PUT THE DETAILS IN THE TITLE

 

Thanks icemark Well just an update but I unhooked the twin scroll and now it boosts to about 5 to 7 but no more???? I have no cats and a tid and other mods so it should be spooling to at least 10psi right now right?

 

wastegate arm connected?
Turbo could be on its way out,
or you could have a boost leak.
Is the turbo loud?

 

or maybe the airfilter is clogged. Unless the wastegate is ported., he should still be able to get up to higher than normal boost, just take a very long time

 

you find out what was wrong>

 

Thinking a hole in intercooler piping somewere. Does your turbo sound normal when it is spooling?

 

Ok it could be a leak before your exhaust hits the hot side of the turbo, bad turbo, already ported wastegate, clogged TID, clogged cat/restrictive exhaust. Have you checked all those?

-Joe

 

Sorry didn't see all of you guys replying, thanks for the suggestions. ANyways this was before I disconnected my twin scroll actuator, after doing that bam started boosting a lot more(5 to 6psi)! than the other day I did the fuel pump rewire and that made me boost to full 10psi however my problem is now after my car gets warmed up after 3 or 4 times of boosting my turbo doesn't boost past 5 psi??? the first 3 or 4 times it boost to 10psi perfect but after that back down to 5. ANyways I checked TID and its ok also I have straight through exgaust so I know its not cats. The turbo is not bad I just bought it and it is spooling to ten at first. I have no ported wastegate. Anywon have any ideas??? Thanks again for the replies!

 

ever find out what went wrong?

 

What is the settings on the SAFC?
If it's not dialed in right, it could be running too rich/.
Ever tried to lean it out a little over 4kRPM?


-Ted

 

I haven't found out what the problem is yet. I have it sitting in a paint shop being painted right now (a guy owed me a favor) anyways I got a stock top mount just incase it is something up with my ghetto front mount. I have the safc set to -5% at 4000 rpm witch I think is right for the setup. I know I need to take it to a dyno but I don't think this is the problem. any other suggestions would be great! Thanks.

 

what kind of vacuum numbers do you get at idle?

 

I get about 15 at idle, why??? here is the thing, I realy don't think it is getting lower compression when warm because this engine has been babied and for the past 2years hasn't even seen boost. When I look at the oil on the tip stick I can't even see it unless it is under light because it is so clean, same with my brake fluid. I don't know what it could be. What would you guys cap a nipple that is comming off an intercooler and seeing alot of boost??? RIght now I have one of those caps you can get at autozone with a clamp on it but I really don't know how well it is holding up. Any other suggestions. I'm putting the stock ic back on but on the back of the stock ic it has two places that need to be caped as well.

 

Do a compression test...just in case.
If it's a stock port motor, the vacuum is a little low.
This is most likely an intake vacuum leak.
Does the engine make whooshing sounds when in boost?


-Ted

 

well I just took my ghetto fmic off and changed it with a stock intercooler and the idle is alot more steady (1200rpm, need to ajust tps) intead of 12 to 1300rpm also throtle responce is incredible and I sold my boost gauge so I don't know how much boost I'm getting (butt dyno tells me alot more) but for sure it seems wayyyyyy more responcive than the old fmic. I mean I step on the gas and boom that thing is shooting up instead of hesitating and taking its time! I think the problem is fixed but I'm not sure until I get a boost gauge (one on order).nnn

only problem now that I can see is that now with the added boost right at 4000 rpm (secondary injector turn on) sometimes it back fires about 3 times, hesitates and then rpm and boost shoot up. They are new 720 secondaries so I know its not old dirty injectors. Could it be too rich??? Thanks.

 

If it backfires, it sounds lean...


-Ted

 

really? hummm..... well I leaned it out about 5% at 4k rpm so I'll just add it back to see what happens. and I'm going to change my fuel filter just to make sure its not clogged and I'm going to reground my fuel pump rewire just to make sure it's a thick enough wire grounding it. this may clear that up.

 

is it a series5 turbo/manifold ? you know series5 turbos (stock) came with the factory electronic boost controller to raise the boost.

my car only boosts for 5psi with no boost controller.

but if yours is a series4 you've got another problem