New car, few questions with issues.
 

I just bought a 10AE and I got a good deal on it, and theres a few things that need to be addressed.
First off, the throttle is sticking, it wont drop down to an idle and raises while im driving.
Second, I believe its running REALLY rich, it backfires ALOT lol
Third, the car is modded quite a bit, and last night I was hitting almost 14-15psi consistantly, today, just 7.

Pretty much all these problems just started within the last 12hrs or so, I bought the car yesterday out of town and drove it home with zero problems.
Im not sure if this makes a difference, but theres a leak in the exhaust manifold gasket and it sounds like a tractor haha

If you guys could help a newbie out, id appreciate it, or at least point me in the right direction, ive booked it into a shop to get the other minor problems fixed, but thats not for 2 weeks :cry:

Thanks

First, tell us all the mods on the car.

Second, are there an after market exhaust mani?

streetport
fd rotors and flywheel
s5 intercooler
all emissions removed
block off plates
p/s and a/c removed
rs-r down springs with tokico blue shocks
megan strut bar
3" TID
actuator removed from ext manifold
optima red top battery
alpine deck
walbro 255lph hp fuel pump
retek fcd
3" full racingbeat exhaust, straight pipe
EDIT* and a Greddy BOV
This is what I was told, and no I dont believe its an aftermarket manifold.

Apparently with these mods it made 253rwhp 238rwtq on a mustang dyno.

On a stock turbo?

First, what you should do is to replace all the fluids so you know it's fresh and protective.

ck your turbo...

IMO the turbo looks aftermarket, but that doesnt mean much lol
Im used to hondas and smaller applications haha

Ill grab a pic? maybe you can tell.

Im going to have all the fluids replaced this week, and I believe they're going to compression test it at the shop when it goes in, if its even borderline im going to rebuild this I think, im actually debating just doing it and starting fresh. Opinions?

OK

Yeah, especially if it was modded. If it was modded...it was driven hard so, make sure you ck everything. Good that you are getting a compression test done.

http://img151.imageshack.us/img151/2978/dscn04541sl.jpg
http://img151.imageshack.us/img151/5139/dscn04564ob.jpg
http://img306.imageshack.us/img306/9730/dscn04576zf.jpg
Also, where I circled with the red, that wire from that sensor isnt plugged in? does that make a diff? I feel like such a damn n00b:( lol im really not, but with this car its a whole new experiance:( haha
http://img132.imageshack.us/img132/8...cn045814mt.jpg

It kinda looks like the stock turbo 2 turbo, but I'm also a newbie to the FC rx7. The wire that is unplugged is the oxygen sensor, and there should be a connector to plug it into someplace on that side of the engine.