Does this make sense....

[231power]

Just wondering if it makes sense to do these upgrades next - my car's on stock injectors and fuel pump, and all I'm really running for upgrades are a ram air intake and dual exhaust (mufflers).

These from gbodyparts:
86-87 Walbro GS340 Pump/Hotwire Harness
Adjustable Fuel Pressure Regulator - Billet
And 42lb injectors and new chip from turbotweak.com

I don't have any big 1/4 mile goals, just looking for a performance boost, and getting rid of some knock. I've got a good mechanic available I think - he said if he does the chip for the car himself, he guarantees it won't knock. He wants a LOT more than t.tweak.com does though for a chip, and I see their chips can be adjusted. I assume he can work with a chip through them?



Thanks for any info!

 

[Just a Six??]

Number 1 Let Eric do the chip!!! He has done thousands & knows them better than "some guy". He also stands behind them 100% & will offer more help, assistance with tuning & his knowledge is 100x that of "some guy"!!!

Also, go for the 60 injectors & dont get the 42's. No benefit to using them & you can grow into the 60's Eric has a special on them as well. No use buying parts twice!

Also, take off the Ram Air as its not helping anything IMO.
Get a cold air kit or leave the K&N under the hood running off the Maf pipe.


PS: Eric may have a line on a deal for the pump & hotwire as well. Ask him?
Both Great items to upgrade & really need to be done! Your starting with the basics & picked your parts well!
next is a Scanmaster! really another Needed tool for us!

 

[strikeeagle]

Number 1 Let Eric do the chip!!! He has done thousands & knows them better than "some guy". He also stands behind them 100% & will offer more help, assistance with tuning & his knowledge is 100x that of "some guy"!!!

Also, go for the 60 injectors & dont get the 42's. No benefit to using them & you can grow into the 60's Eric has a special on them as well. No use buying parts twice!

Also, take off the Ram Air as its not helping anything IMO.
Get a cold air kit or leave the K&N under the hood running off the Maf pipe.


PS: Eric may have a line on a deal for the pump & hotwire as well. Ask him?
Both Great items to upgrade & really need to be done! Your starting with the basics & picked your parts well!
next is a Scanmaster! really another Needed tool for us!

I agree with the above 100%.

I would add that the Pete Tomka cold air kit is the very nicest IME. OEM look, best fit, best quality of materials. Pete has put a lot of thought into it - I suggest you phone him and discuss it and convince yourself that Pete and his products are top notch.

As far as the Scanmaster goes, you are flying blind until you get some sort of scan tool, and IME the Scanmaster is the ticket.

If you're getting knock, factor that today's pump gas is piss poor. My GN hated it, even at 15 PSI.

Good luck with your goals. BTW, your car looks great. I especially like the wheels.

strike

 

[87granny]

x3 go for the 60's and let Eric do the chip get the combo that is, cause with my previous chip and stock injectors i had knock as well.ScanMaster is a must also upgrade the fuel syaten with hot wire and adj. fuel psi reg. also nice car

 

[231power]

But ....but , aren't the 42# injectors good into the 11's or something? If so, that would keep me going for a long time and save me $100 on the parts order.

What I was thinking with the chip was to get T.tweak, aka Eric I guess, to build it - then when my local mechanic tunes the car after the fuel pump, adj. regulator, and injector install, maybe he can make adjustments to the chip if it needs any, since the settings can be tweaked on them?

Thanks for any thoughts gents.

 

[ESP Products]

But ....but , aren't the 42# injectors good into the 11's or something? If so, that would keep me going for a long time and save me $100 on the parts order.

- then when my local mechanic tunes the car after the fuel pump, adj. regulator, and injector install, maybe he can make adjustments to the chip if it needs any, since the settings can be tweaked on them?

42# inj. are good to about 375 RWHP (450 engine) If you THINK you will come close, go bigger. If you have no planes for internal upgrades, then you fine with 42s. Also, be sure you "local mechanic" knows the car; you'd be surprised how many don't. If you have a couple extra buck, look into a Wide Band O2 for tuning. It's worth it.

Hope this helps you.

 

[BLACK6PACK]

Spend the $100 and get the 60s. If a year or two from now you decide to go to a bigger turbo, you'll end up spending several hundred dollars buying new injectors.

 

[notacarlo]

he said if he does the chip for the car himself, he guarantees it won't knock.

I want his number then....cuz that is a BOLD statement.

Go with the 60's.

 

[BetMinesFaster]

I want his number then....cuz that is a BOLD statement.

Go with the 60's.

X2, very bold! And do the 60's - these cars are an ilness, you will grow into them in a hurry.....

 

[231power]

You were right Just a Six, Eric said he also has the Walbro pump and adj. regulator, so I'm waiting for him to price it up.
I'll post some results in a couple weeks when everything is done.

 

[231power]

Dyno Results....

So.....we put on these:
-Walbro GS340 Pump/Hotwire Harness
-Adj. Fuel Pressure Reg.
-42lb injectors and new chip from turbotweak

Then we found the cat. converter was plugged, or at least starting to, so we added a used ATR 3" downpipe and 3" cat. Plugs were also in nasty shape so those are changed as well. Here's the dyno results, which are pretty sad if the stock 245hp/355 torque figures are actually attainable from a stock car.

On the new chip, I was getting 'rapid fire', close together knock which was new to me. Now I'm on diff. chip from my mechanic that he calls his starting point for GN tuning (he adjusted for the new injectors of course). It's better, still knocks but not like the other one was. We can continue to tweak the chip, I've just been testing it now for a couple days. The car is bogging down some on take-off too, and the tranny just seems erratic.

Any thoughts on the dyno figures or in general??

 

[chadly]

Was the car running good prior to the upgrades other than knock? Since you just changed the plugs I assuming you have not yet done the “spring cleaning”. The car must run perfect before you do any upgrading. How are you measuring knock. Do you have any scan master readings? What is you fuel pressure set at? And while I agree the 60’s were the way to go there is a local here that runs 10.65 on 42’s and alky.

 

[chadly]

Also what boost and gas are you running?

 

[SFITurbo]

You are way down on hp and tq. Check your basic numbers for tuning problems, do the spring cleaning required, check for exh manifold leaks/vac leaks, f.p. rise w/boost. Get the car set up correctly with what you have already and you should be alot higher and it will seem like a completely different car. Don't flog it until it's running correctly or you will be getting familiar with it's internals. A sick GN is frustrating and not impressive, a healthy one will make you run out of face from the big grin. Then comes the never ending quest for more power

 

[BLACK6PACK]

The 42s are known for off idle stumble. One of the reasons everyone said to get the 60s. Now Eric can burn a good chip for them, but they are somewhat small and can be tough to tune. The downpipe wasn't necessary. You need to figure out your own goals and stop letting this mechanic determine your direction. You should have taken the cat off and busted out all the internals. Would have saved you several hundred dollars, and let you buy the better injectors and probably an alky kit.

 

[54Rich]

Here's what I have. Now I have no idea what the HP/TQ numbers are, but this thing moves! Very good throttle response, the car pulls hard. So I'd say somthing is off on your car.

Stock Turbo
No Cat
009's
XP Pump, set at 41 with line off (It's best here).
Hot Wire
Adj FR
Power Plate
TT Chip burned for 92 gas
4" Cold air intake
3.5" MAS with Translator.

Thats about it. 16lbs of boost, 780 on the 02's with Zero Knock All the scanmaster numbers are perfect.

Post your numbers and these guys will figure it out

 

[Junior Samples]

You really must go through the spring cleaning guide, remove the IC and clean.
Are the plugs gapped at 32? what plugs?
pull the pcv and line and look see for oil dripping, if its sucking oil up into your TB then its sludging up the burn.

I went against everyone recomendations on the 60#rs and got 42#rs....two months later I went with the 60's, had to send the chip back, cost an extra 55.00 for Eric to burn new program..blah blah blah

Anyway keep tinkering with it, you'll figgur it out

 

[231power]

back to friggin

Was the car running good prior to the upgrades other than knock? Since you just changed the plugs I assuming you have not yet done the “spring cleaning”. The car must run perfect before you do any upgrading. How are you measuring knock. Do you have any scan master readings? What is you fuel pressure set at? And while I agree the 60’s were the way to go there is a local here that runs 10.65 on 42’s and alky.

The car was working ok, it would knock a bit at WOT but nothing too serious - it has probably been on a slow performance decline I’d say that I didn’t really notice. I’m going to finish up the spring cleaning with a PCV, fuel filter, and intercooler cleaning and I’m booked with the mechanic tomorrow to work on tuning. He doesn’t have any scan master readings from last time.
Can I get an idea what kind of info to get from the scan tool? Which readings, how many passes, whatever we need to have so I can post some useful info – it’s hard to get booked back into the mechanic to get more info. Fuel pressure is set at 42lbs I believe and boost is about 16 or 17 lbs. I run premium 91 fuel and some octane boost usually.

You really must go through the spring cleaning guide, remove the IC and clean.
Are the plugs gapped at 32? what plugs?
pull the pcv and line and look see for oil dripping, if its sucking oil up into your TB then its sludging up the burn.

I went against everyone recomendations on the 60#rs and got 42#rs....two months later I went with the 60's, had to send the chip back, cost an extra 55.00 for Eric to burn new program..blah blah blah

Anyway keep tinkering with it, you'll figgur it out

The plugs are Autolite 24’s, and they may be gapped wrong – might be at 40 or 42, so I’ll fix that. I should be at 32 then right?

 

[Junior Samples]

Somthing you just posted was alarming to a slight degree...

And that is you said "a little knock at WOT but nothing big"....

OK did you have a scan tool hooked up? how about a caspers knock alarm? knock gauge?

or did you messure the knock by how loud your teeth were rattling?
man by the time you hear the knock on these cars...its off the scale and your doing way more damage then you think

you need to shell out 200 clams for at least the Scanmaster period, no getting around it bro..

I didnt save the quote to finish reading... i pretty much hit respond at the KNOCK word

 

[Junior Samples]

The scanmaster can be purchased from FULL THROTTLE SPEED - Store Front Page

Even the baddest dudes on this board with laptops and other goodies still have one hard wired in for quick ref

it will tell you O2 and knock retard degrees
your short term and long term learn which is good for trouble shooting if your ecm is pulling or adding fuel either short term or long.
your maf, tps, iac, coolent temps, rpm, mph, any fault codes and cross counts for your O2 sensor

you can use the SM to get your basic tune and keep it.

you keep mentioning your mechanic... start diving into these threads on everything you can absorb so you can learn your car to fix most stuff or else you will be at mercy of your mechanic


Good luck
Mike