14b turbo lag??

[micahmr2]

Just looking for some quick thoughts? Just reinstalled engine (1st gen) no balance shafts, new front mount. Before taking car apart car ran and boosted great 20 psi, hacked mass air flow, 255, and now have AFPR. Have tested and repaired all boost leaks. If I accel in first barely gets to 14 psi, second gear if I accel on a roll bog down and by 3,000 rpms I may hit 5 psi, but once the turbo builds up from 5 to 7,000 rpms I'm at 19 psi, and really pulls hard (suprisely very well for a 14b) My thoughts to recheck ignition tming. Sorry no logger.

 

[CanadianTSi]

You sure there are No cracks around the wastegate and it sealed up tight when closed?

 

[ICE_T]

look out the WG actuator arm. Maybe it working bad.

 

[micahmr2]

I know there were alot of cracks before about 2 years ago, but my thought is why is it noticable now? It never took that long to spool before. Has anybody every repair those housings before? Is it because of the bigger ic piping?

Hey, sorry looking for a cheap fix for that issue.

 

[staticbrainwash]

why r u running a front mount with a 14b? from what i've read around here you pretty much never need a front mount with a 14b. but i guess it depends on how big it is too.

i'd check for boost leaks, or pre turbo exhaust leaks. or like they said before, turbine housing cracks. and honestly, i know there's a site you can pick up new turbing housings for pretty cheap. i'd have to look for it though. i almost wanna say sbr has em, but i'd have to look.

 

[micahmr2]

As far as the front mount (car was apart for complete body paint job), just planning for the future. As far as boost leaks, they're all taken care of. If ignition timing was off a deg or 2 would that be it? I haven't decided about a turbo yet. and wanted to make it runs as well with a stock turbo first.

 

[DevilSperm]

Double check your timing, to me thats what it sounds like. Post back what you find out. As far as the FMIC with a 14b, when you start running 20 psi on a 14b the temps seem to increase quite a bit The ol front mount helps to counteract that a bit. I picked up 2 tenths by just that.

 

[staticbrainwash]

hmmmm. i was under the impression a 14b wouldn't flow enough for temps to get that high. eve at 20psi. learn something new everyday i guess.

what was that thing falling to at redline?

 

[2deep]

why r u running a front mount with a 14b? from what i've read around here you pretty much never need a front mount with a 14b.[/Q


Looks to me that he's doing the right thing....and by that I mean he's getting his supporting mods done first. Unlike most DSMers, and their backwards modding ...getting an upgraded turbo and wondering why they're not as fast as they should be. So I can see why running a fmic with a 14b looks strange to most. Good job at staying patient and tackling those supporting mods first, it'll pay off big-time in the end

 

[staticbrainwash]

i guess im just used to hearing about people moving to a 16g of some kind, then getting a fmic and upgrading turbos from there.

but if he's not dding the car, i guess there isn't that great a need to keep everything that closely knit.

 

[CanadianTSi]

A FMIC on a 14b car makes perfect sense, hell even a FMIC on a t-25 makes sense.

Anyone who tells you that your turbo is to small for a FMIC or it will add tons of lag is st00pid.

 

[2deep]

A FMIC on a 14b car makes perfect sense, hell even a FMIC on a t-25 makes sense.

Anyone who tells you that your turbo is to small for a FMIC or it will add tons of lag is st00pid.

Well put

 

[staticbrainwash]

i was under the impression that something like a t-25 or a 14b wouldn't flow enough to push through a big fmic.

news to me. too bad i spent a bunch of cash on a uicp and licp for a sidemount.

 

[chicagoavenger]

A FMIC on a 14b car makes perfect sense, hell even a FMIC on a t-25 makes sense.

Anyone who tells you that your turbo is to small for a FMIC or it will add tons of lag is st00pid.

here here!!! my 14b can heat soak my sidemount very quickly

 

[snailed]

taht happened to me, the acutator pulled the flapper toward the rad so taht when the flapper closes it doesn't actually seal and let you make full boost, you also hit your low max at like 4-5k, my flapper gap was 2-3 mm. It sucked becasue that is what i ran my 1/4 mile time with so check it out man just look at where teh flapper axle sticks out of the turbine and if there is some of teh rod sticking out and if the actuator is putting a load on it too. Thats if you don't wanna take the O2 off and look. good luck

 

[jepherz]

i was under the impression that something like a t-25 or a 14b wouldn't flow enough to push through a big fmic.

news to me. too bad i spent a bunch of cash on a uicp and licp for a sidemount.

This is exactly the same argument that people have about exhaust. Obviously, the bigger, the better. Just as with an IC, the more cooling you give, the better.

 

[napkinthief]

so there is no negative side to running the biggest front mount you can find on a 14b?

check to see if your wastegate is operating properly and if your bov is leaking or not. also tighten all your couplers, 80% of the time one of them is loose

 

[oztofrdm]

here here!!! my 14b can heat soak my sidemount very quickly

HAHAHA i have a burn mark on my finger to prove that you can heat soak a smic on a 14b. We were tunning at about 20ish psi. Did three pulls and started to get knock. Got out of the car to see if it was heatsoaked and sure enough....

 

[micahmr2]

I believe it's timing. I borrowed a Snap On timing light from a tech here at work. When setting the timing I noticed with his gun it showed the tiimiing was maybe a 6 deg, but there is a setting on the gun to advance it 5 deg so the timing mark would show 0 on the crank. But, it wasn't is was like 3 deg. Then it also has a tach on the gun, it was showing 1,400 rpms (the cars tach was reading 800rpms,). No adjustments on the gun. Going to try another one hopefully today. But with the adjustment that I did do. It has more lag now.

 

[Ultimatedsm]

Check if your flapper has been pulled out a little. Sometimes it does get pulled out and gives you a lot of boost problems such as incredible lag inbetween shifts, and inconsistant boost. You are describing the same symthoms. Anyway, the flapper should be basically touching the housing a little, if its not touching, you have a problem and just push it back in. I use a 26x12x3 FMIC on my 14B and I have no problems actually my car pulls a lot harder specially in hot weather which I will not see for a million years (Canada, Ontario).