I currently have a stock 87 TII

If I add a Hi Flow K&N drop in filter into the box and a 3" downpipe into a 3" high flow cat split into 2 duel 2 1/2 " with 2 high flow mufflers, about how many PSI do you think the turbo will start to boost too?

 

Will the standard computer be cool with this set-up

 

a friend of mine was seeing 11 psi in 1st, 14 in 2nd gear, with that setup. You will see atleast 10 psi. You will blow the engine without a fuel mods, and if you don't have a FCD, you'll for sure blow the rear rotor. You need some fuel mods and a piggy back, ie. S-afc and 720s secondaries and a walbro( or atleast rewired stock fuel pump)

 

Really. So I shouldn't rev it udner boost? How much will all that extra stuff cost? more than $1000

 

Will it blow up the very first time I rev it under boost or will it take a while?

 

it took my buddy like 2 weeks. Don't do it. S-afc can be had for like 3-400. 720s can't be more than 100 each, walbro pump can be had for 100-140. Put you main cat back in until you get that stuff. Stay under 8psi

 

Should I get a boost gauge to monitor PSI?. If so how much are they?

 

yes you should, they can range from 60-300. Autometer is the cheapest, and works fine. But if you want some style go Defi i still gotta install those..... :redface:

 

I'd say a new fuel pump and a safc should be fine at 12psi ... after that you'll want a new ic. But you said 87 right? The 87's stock psi is 5, so you will probably get up to 8 or 9. You'll need a fcd to get past 7.5psi ... but you should be fine, just monitor your a/f, boost and fuel pressure.

 

yeah im not gonna push past 10psi on the stock intercooler on the street. bad idea.