hey guys i have an 88 vert that had a tpi 305 and a t5 swapped into it. The car has a really nasty miss and the rpms go up and down between 7 and 800 but its randomly and intermitten one minute it runs great and will light the tires up the next minute it has absolutly no power and jerks violently when moving its throwing a 51 and saying the maf is reading high whats this mean? and its also throwing a code 33 bad egr but thats because the egrs arent hooked up stupid kids nowa days im gonna go threw the engine bay and hook everything up right but whats some of the common issues with this i know its a very common problem in these cars im 16 and dont have much cash so the more input is greatly appreciated thanks in advanced! - Rob

 

sounds like a possible ecm problem or ecm ground. Check the ground behind the rh cylinder head. Code 33 is maf high this throws if its over the the threshold. check the green wire on the maf for a short too ground. The code 32 will throw if egr is disconnected. you may have 2 failing components maf and ecm.

 

Ok I'll check that and hook up the egr and everything it also has a super chip in it would this affect it at all?

 

It could, ads superchip made 2 different chips a complete memcal and a piggyback unit. If the its a piggy back unit make sure the original memcal is seated correctly to the ads. I have never seen the netress or a i/o buffer go bad but some have posted here that some hypertechs eproms have lost data over time.

 

Alright I'll check it all out tomorrow his one has a whole chip not a piggy back I'll keep ya updated thanks so much I really appreciate it

 

ok checked the car today the super chip is for a an 86 camaro 305 tpi automatic the motor was swapped into the car would the automatic chip cause this to happen in the car because it has a t5 in it i also fired her up and the miss is worse then before then cleared up the came back just as bad

 

first of all code33 is a map low vacuum error,code 51 is a prom error(bad chip or chip not seated properly)

 

I have personally seen a code 33 on a maf tpi cause the ecm togo into limp home mode. A friend of mine did a mild cam swap. I changed the threshold of 33 to 110 and problem was solved. But the code 51 is concerning and maybe the memcal or ecm. I would look for someone parting out a 86-87 305 tpi car and get the ecm and memcal. I started seeing vats in 88 or so programing. 89 $6e is the best but you would need to reprogram out the vats or buy a bypass modulator.