2g talon tsi awd, how much boost with following mods?

[thewraith]

Hi all,

I apologize if this is a redundant question but I have to ask. I have a 95' talon tsi awd. The car is great mechanically with good compression accross the board. I have the following mods and would like to know what I can turn my boost up to with what I have safely.

-Hard intercooler pipes
-Punishment 2.5" dp with high flow cat and 3" exhaust
-hks evc
-injen style intake
-typical gauges (boost, oil pressure, water temp)
-i have an apexi neo and a walbro 255 w/pressure controller coming in
- i'm on stock t25

What is the max boost I can run with these mods?

I now have a 16g on the way as well- what is max boost I can run now? Then are injectors and Intercooler a must? I am aiming for max 350hp for now. 300 would be fine as well, again- I know this may be a stupid or redundant question.

 

[assault187]

do you have injectors?? 550's ,maybe?

 

[peypey's ride]

do you have a stock BOV? Replace it! Get a crushed 1g if you can. Just remember that you still need to recirculate the new one. Also have you rewired your fuel pump? You need to do both.

 

[Artago]

With stock injectors, stock turbo, and stock BOV you are already running them at max. You can maybe put it up 1-2 PSi. Buy some injectors, get a 1G BOV of eBay, put that 16G in and you can turn the boost up all you want (assuming you tune it). Oh and invest in a wide band O2, the AEM UEGO is a pretty good choice. It will allow you to monitor A/F ratio on the fly. Cheers, Tom

 

[MountainDew]

Get a 1G BOV and do the "Dodge Garage Mod" in the Tech/DIY. Crushing is just half-assed.

Also I'd recomend not even touching the boost controller until you get a logger. I made the mistake of turning my controller up for the first time. Hit 21psi and was wondering how the hell I didn't hit fuel cut.

Luckily nothing is wrong with my car as I know. On stock injectors I'd run like 17-18 psi MAX. Get some 550s or 660s and with a good tune, you could get by hitting 20-21psi pretty safely. ARP studs and MLS gasket would help of course. If you have to pull the head off anytime soon or change a t-belt, definitely get a new OEM or machine the block+head and get an MLS, then definitely get ARP studs. This is assuming you don't already have them though.

 

[thewraith]

Bah, i'm an idiot. I have the greddy type s bov as well. Duh. My apologies. I don't have injectors yet- but I will order some 550's, my HP goal is not more then 350. Of course anything additional is always great but even 300 would be a big change from what I currently make. I drove my friends 92 talon turbo fwd yesterday and he has evo 3 o2 housing and the 14b turned up to 15psi. That thing was worlds faster then my car

Without the injectors installed and running the 16g, what should i stay safe at for now? Or should I take the above members advice and not mess w/the stock boost once the 16g is put on till I can tune and get injectors?

Thanks a lot for the answers you've all given me thus far!

 

[MountainDew]

I wouldn't turn it up at all until you get a datalogger. With logging and piggyback tuning, I'd probably say you'd be safe around the 16-17psi range. If you're wanting to reach 350hp eventually, I'd recomend DSMLink for sure.

 

[thewraith]

So,

Just to be clear on this. With my current mods- I can hook the 16g up to my car and not touch the boost level and I should be fine? Or do I have to turn it down since a bigger turbo? Thanks again.

Meek

 

[oldman]

So,

Just to be clear on this. With my current mods- I can hook the 16g up to my car and not touch the boost level and I should be fine? Or do I have to turn it down since a bigger turbo? Thanks again.

Meek

1. Every car is different and no one can really answer that question except for Mr. logger and/or Mrs. WB O2 sensor. That said, 15 psi on the 16G is generally considered pretty safe with the stock fuel system AS LONG AS every component is functioning properly.

2. For 350 whp, you will need at least 650s and FMIC.

 

[MountainDew]

So,

Just to be clear on this. With my current mods- I can hook the 16g up to my car and not touch the boost level and I should be fine? Or do I have to turn it down since a bigger turbo? Thanks again.

Meek

As long as you're not creeping, you should be fine.

 

[TAndrus]

I hate to butt into your thread, but on my setup I'm pretty sure I have a stock turbo, along with stock fuel injectors and when I floor it, I can get up to 19-20psi on my boost gauge. Is that bad?

 

[oldman]

I hate to butt into your thread, but on my setup I'm pretty sure I have a stock turbo, along with stock fuel injectors and when I floor it, I can get up to 19-20psi on my boost gauge. Is that bad?

1. Please complete your car profile.

2. Yes, it's bad. Turn your boost down to 15ish.

 

[TAndrus]

1. Please complete your car profile.

2. Yes, it's bad. Turn your boost down to 15ish.

Oldman,
I would complete my car profile, but I really don't know much about the car seeing that I bought it from a private seller who also didn't know much (He'd only owned it a year) about what was done before he had it.

I'd have to have a boost controller to turn my boost down wouldn't I?

 

[snowborder714]

I'd have to have a boost controller to turn my boost down wouldn't I?

Yes. That should be one of the first things you buy other than a boost gauge.

 

[oldman]

I would complete my car profile, but I really don't know much about the car seeing that I bought it from a private seller who also didn't know much (He'd only owned it a year) about what was done before he had it.

At least fill out the vehicle type so we know which car we are dealing with, yes it makes a difference.

I'd have to have a boost controller to turn my boost down wouldn't I?

There are not many ways a stock car can overboost without a MBC.

1. 1G or 2G? (See what I mean? )

2. Stock exhaust?

3. Stock intake pipe?

 

[MountainDew]

TAndrus, for the sake of your car, you sound like you really need some local help. I'm in the metro and am free Friday, Saturday and Sunday. I'd be more then happy to look at your car for you and help you identify everything and tell you what needs to be done.

 

[oldman]

TAndrus, for the sake of your car, you sound like you really need some local help. I'm in the metro and am free Friday, Saturday and Sunday. I'd be more then happy to look at your car for you and help you identify everything and tell you what needs to be done.

If he takes up on your offer, the first thing I would suggest is to test run with the stock BCS bypassed by connecting the compressor/turbo outlet pipe directly to the wastegate and see if boost levels out at 10-12 psi.

 

[TAndrus]

At least fill out the vehicle type so we know which car we are dealing with, yes it makes a difference.


There are not many ways a stock car can overboost without a MBC.

1. 1G or 2G? (See what I mean? )

2. Stock exhaust?

3. Stock intake pipe?

There, I've put in what I know. As far as I know there is not a MBC installed.

 

[MountainDew]

If he takes up on your offer, the first thing I would suggest is to test run with the stock BCS bypassed by connecting the compressor/turbo outlet pipe directly to the wastegate and see if boost levels out at 10-12 psi.

Yeah I've give that a shot. I could also throw my MBC on there and turn it all the way down to see if that helps control it.

 

[TAndrus]

It doesn't seem to be saving my profile info.

Here's a list:
1995 Talon TSi AWD
HKS bov
Dejon Intake
Coil over lowering kit
Strut tower brace
Aftermarket exhaust

That's all I know about the car..

 

[oldman]

There, I've put in what I know. As far as I know there is not a MBC installed.

You should use font colors other than white so I can see it.

Yeah I've give that a shot. I could also throw my MBC on there and turn it all the way down to see if that helps control it.

If he's overboosting without any mbc, I doubt you'll be able to turn it down via a mbc. I suspect he probably have one of the following conditions.

1. A BCS that is bleeding too much pressure off, the test above will reveal this immediately.

2. A leak on the hose leading to the wastegate, on stock 14B's, the wastegate fitting is right under the intake pipe and a 3" aftermarket intake pipes are known to sit right on the fitting resulting in ripped hose, hence question #3.

3. Boost creep caused by aftermarket exhaust, hence question #2.

That said, I seriously doubt condition 2 and 3 will happen on a T25, hence question #1.

Why are we talking like he is not here?

 

[oldman]

It doesn't seem to be saving my profile info.

Here's a list:
1995 Talon TSi AWD
HKS bov
Dejon Intake
Coil over lowering kit
Strut tower brace
Aftermarket exhaust

That's all I know about the car..

Do the test run posted in post #17 and report back the result.

 

[zacksgsx]

Sorry, a little off target. What are the symptoms of boost creep? I think I may have it. When I shift the BOV vents normally (non-recirculating) then there is a second lesser venting a few moments later. TP

 

[Defiant]

You're venting?
Don't.

 

[zacksgsx]

I have read the threads on venting but I don't get it. Why not vent? It runs a little rich, other than that it seems to run great for a stock T25 with basic intake/exhaust mods. Still running the stock maf. Whats the worst that could happen? TP