i have an s13 blacktop in an s13, but its running off a redtop ecu. for a while i had a warped turbo manifold, so it wasn't seeing full boost because of the exhaust leak. i just got a new mani put on it, so now its running full boost. but its slower now, and kinda spits while going through boost. also, the header glows bright *** red.

could it be running lean?? i'm running the stock KA fuel pump, is that sufficient or should i upgrade to like a walbro 255?

also, the header is the only part the gets hot. engine temp is normal, but the mani is red as fawkkkk.

any help will be greatly appreciated

 

Anybody got anything?

I have a stock ka fuel filter on it and I know most people run the z32 filter. I staight lined while I had a full tank to see if the fuel filter was too reseictive and that didn't change anything. Also, I pinched the return line and that didn't change anything either so it's not the pressure regulator.

Could it be the O2 sensor??

 

I am not really sure what is making your manifold glow red. that is weird man. Seems like your misfiring or something. What boost are you running?

 

well, i havent got a boost guage in it. but its all stock so it should be running stock boost. the only non-stock items on it are a megan racing manifold and downpipe and a FMIC kit.

im gettin a boost gauge tomorrow or the next day so ill know for sure later this week.

 

well if your running stock boost, it shouldnt get that hot. You could have low fuel pressure which could be a bad thing. Running lean is very dangerous man. Get your fuel system checked out for pressure.

 

thats what i was thinking. how do you go about checking the fuel pressure since SR's dont have a schrater(im terrible with spelling lol) valve?

 

you just put a gauge in line with the line going into the fuel rail. Before the FPR

 

aight. thanks bro.

 

well, i put a different fuel pump in it(suppose to be a walboro but i dont think it is) and its runnin better. it pulls all the way through boost with out bustin up. i have just a regular Autometer A/F ratio gauge and it still says its runnin close to lean most of the time. Are these gauges accurate or do i need a wideband?

also, i finally got a boost gauge and at WOT, its pushin like 9psi. isnt stock SR boost 7psi?

 

wow, so many views, so few replys....


well the studs for the turbo broke so i took the mani off to fix them and spun the turbo shaft just for kicks and it sounded like a skateboard bearing when it goes bad lol so gotta get it rebuilt. prolly gonna park her and stop wasting my money tryin to keep drivin her. but please send any words of wisdom to me.

 

get a wideband dosnt waste money rebuilding that POS turbo just buy a better one and my stock SR ran 9.9 lbs stock and i used to run 18lbs on stock turbo np

 

aight. theres a dude around here that has a "disco potato" for sale...have yall heard of that?? a couple people have said theyre really good turbos. the dude thats sellin is changin from t25 to t3 setup, so i can prolly get a good deal on it. would yall go with that turbo?

 

disco potato is t28 but there are many t28's is it a s14 or s15 t28 or aftermarket? goto get model number on it but for the most part they are good as long as they are ball bearing

 

oh okay. im thinking its aftermarket, but it could be on a s14 SR. i havent talked to the guy thats sellin it any since im broke right now lol. a buddy of mine just told me about it. depending on how i can work out my funds, i may be pickin up a '90 coupe this week or next for a dd, then ima park my hatch and go through it and do everything right instead of doin this and that to keep it runnin. thanks for your help man. ill keep **** that i figure out is wrong with it posted lol

 

Hey I was wondering if you were running a cat. in your exhaust? I just had to replace mine because it was busted up on the inside and was giving me almost the same problem, but my manifold was not as bright.
I also have a bunch of turbos and as a matter I think I have a mint kouki s14 t28 if you want it for cheap pm me and we'll talk about it. I really dont mind at all to help ya out!